Fitting an iPhone SE, small wallet, and 600 ml bottle

Part of our guide on scratch-free magnetic gym pouch

This page shows how to measure and verify a magnetic pouch fits an iPhone SE, wallet, and 600 ml bottle without bulging — and how to test the magnet and layout for your exact items.

Dimensions of iPhone SE (2nd gen), typical small wallet, and 600 ml bottle

The iPhone SE (2nd generation) measures 138.4 mm tall, 67.3 mm wide and 7.3 mm thick (phone only). In common use you will have a case that adds 1–3 mm to thickness and sometimes a few mm to length/width depending on bumper/case style. The SE’s nominal mass is about 148 g; that mass is useful when estimating how much magnetic pull is needed to hold the device in place.

A slim “small wallet” intended for front-pocket carry typically measures near 95 × 65 mm in footprint and between 8–20 mm thick when loaded with a few cards and cash. Wallet thickness is the most variable dimension: a leather card-holder with two cards might be under 10 mm, whereas a loaded fold wallet will be closer to 15–20 mm.

A 600 ml bottle is not a single standard size: many consumer bottles that hold about 600 ml are roughly 60–75 mm in diameter and 185–215 mm tall. Some are slim and tall; others are wider and shorter. How that bottle fits a pouch depends on whether the pouch will hold it upright, sideways, or diagonally.

• iPhone SE (2nd gen): 138.4 × 67.3 × 7.3 mm; weight ≈148 g
• Small wallet (loaded, slim): ~95 × 65 × 8–20 mm (thickness varies)
• 600 ml bottle: diameter typically 60–75 mm; height typically 185–215 mm

Why the earlier fixed minimum dimensions were incorrect and how to set realistic minimums

The earlier draft listed an absolute minimum internal dimension of 9.5 × 6 × 4.5 cm (95 × 60 × 45 mm). That number is inconsistent with the actual phone dimensions (the SE is 138.4 mm tall), so it cannot serve as a universal minimum unless you change how the items are arranged inside the pouch. Any single fixed triple of values that does not reflect different layout options is likely to be wrong for many real-world pouches. People in this spot often ask about magnetic pouch for 32 mm steel bars as well.

Instead of one hard minimum, think in terms of layout-dependent dimension ranges and clearance percentages. The correct approach is to (1) choose a layout (how the bottle is positioned relative to the phone and wallet), (2) measure the combined external envelope of the contents in that configuration, and (3) add a clearance margin (typically 10–20% in each direction for irregular objects and flexible fabrics) to determine the pouch internal dimensions.

Below I provide concrete layout options and estimated internal-dimension ranges derived from the physical sizes above plus a stated clearance. These are estimates intended to be tested with your actual items; they are based on simple geometric addition of footprints and standard clearance rules used in small-bag and accessory design (practical guidance designers follow when accommodating irregular objects).

Practical layout options and dimension ranges (estimates with rationale)

There are three common ways to place the phone, wallet and bottle in the same pouch. Each layout produces different minimal internal sizes and different magnet/structure requirements: People in this spot often ask about gym pouch holding phone and wallet as well.

1) Bottle upright (vertical) with phone and wallet stacked in front: This requires the pouch to be tall enough for the bottle’s height and deep/wide enough for phone/wallet in the remaining cross-section. Very few compact ‘pouches’ sized for phones are tall enough to accept a 185–215 mm bottle vertically unless they are specifically bottle carriers.

2) Bottle horizontal (lying across the pouch) with phone and wallet stacked beside or on top: This is the most common way to fit a tall bottle into a shorter pouch — the bottle’s length becomes the pouch length, so the pouch must be long enough for the bottle but can be thinner in depth/height.

3) Diagonal/angled packing: By placing the bottle and phone at an angle relative to the pouch axes you often reduce one dimension requirement at the cost of another. This can be a space-efficient approach in a soft, flexible pouch but makes internal organization and magnet placement more critical. We go through secure phone storage on rails step by step elsewhere on the site.

• Estimate clearances: allow 10–20% extra linear clearance per axis for flexible materials and irregular shapes; a stiffer pouch can work closer to exact dimensions.
• Measure your specific bottle: a 600 ml bottle’s length/height typically determines whether it can be stored upright or must be laid horizontally.
• Decide on orientation first, then add clearance and verify with a real test pack.

Estimated internal-dimension ranges by layout (worked examples)

Use the actual item dimensions plus 12% linear clearance for comfortable fit. Example A — bottle horizontal (most practical): bottle length 200 mm, diameter 65 mm. Required internal length ≈ 200 × 1.12 ≈ 224 mm. Cross-section beside bottle must accept phone+wallet stack: phone width ≈ 67 mm, wallet thickness ≈ 15 mm; practical internal width ≈ 65–90 mm. Internal depth (height) to clear tall case/wallet and bottle curvature: 40–60 mm.

Example B — bottle diagonal: allows shorter length but larger cross-section. Estimate length 190–210 mm, width 80–95 mm, depth 40–60 mm; works with flexible fabric and shallow bottle taper. Example C — bottle upright: only for tall carrier pouches; internal height ≥190–215 mm, width and depth sized for phone+wallet cross-section (refer to A).

• Horizontal (practical): length ≈ 220–240 mm, width ≈ 65–95 mm, depth ≈ 40–60 mm.
• Diagonal: length ≈ 190–210 mm, width ≈ 80–95 mm, depth ≈ 40–60 mm.
• Vertical: height ≥ 190–215 mm; width/depth sized for phone+wallet cross-section.

Magnetic hold: how the 150 gf figure was derived and what to use instead

The 150 gf figure comes from equating magnetic pull to the iPhone SE (2nd gen) mass: phone mass ≈ 148 g, so a magnet rated near 150 gf equals that static weight under gravity. That makes 150 gf a minimum static lower bound for a perfect vertical, static hold with ideal contact and no case gaps.

Real use adds lateral shear, jerks, and extra load from a wallet pressing on the phone or flap. For general carry choose 150–200 gf only if the phone sits mostly horizontal or in low-motion contexts. For walking, transit, or any vertical-hang risk, prefer 200–300 gf or multiple magnets and a mechanical backup.

Treat 150 gf as a starting criterion tied to phone mass; select a higher-rated pull to cover orientation, dynamic forces, and added wallet pressure.

• 150 gf = approximate lower bound (phone mass equivalence) for ideal static vertical hold.
• Use 150–200 gf for low-dynamic, mostly horizontal carry.
• Use 200–300 gf or combined closures for vertical or dynamic use, or when wallet presses on the closure.

How to measure and test magnet hold yourself (practical, reproducible method)

Measure with the phone and wallet in their final packed configuration. Use a small spring (force) scale or postal scale with a strap. Attach the strap to the phone, close the pouch, and pull steadily until the magnet releases. The scale reading in grams-force gives the pull-off force to compare against the phone mass (~148 g) and your chosen safety margin.

If no scale is available, perform a repeatable qualitative test: hang the packed pouch so the magnet is the only support and observe whether the phone drops under gravity when you let go briefly; then apply a steady, reproducible manual pull and note if release occurs before a firm steady-hand pull equivalent to the phone’s weight plus movement margin. Repeat five times.

Document orientation (vertical/horizontal), whether the wallet pressed the closure, and the case thickness. If measured pull ≤ phone mass (~148 g), the magnet is insufficient; aim for measured pull ≥ 1.5× phone mass (≈225 g) for vertical/dynamic use.

• Best: use a spring or postal scale; read pull-off in g and compare to 148 g phone mass.
• If no scale: use repeated, consistent hang-and-pull tests and record results.
• Always test with case, wallet and the exact packed layout you intend to carry.

How the bottle fits relative to phone and wallet and why shape/compartments matter

The way the bottle is positioned relative to the phone and wallet determines which internal dimension is primary. If the bottle lies horizontally, the pouch length must accommodate the bottle’s longest axis; if the bottle stands upright, the pouch height must match the bottle’s height. In compact pouches the usual, practical approach is to place the bottle horizontally and stack phone+wallet in the remaining cross-section.

Irregular shapes make a difference: the phone is a thin rectangular solid, the wallet is a sometimes-squishy rectangular prism with variable thickness, and the bottle is a cylinder. A single undivided soft pouch will let these items press on one another and the fabric will bulge where the cylinder pushes out. A pouch with a dedicated bottle sleeve or an internal divider keeps the cylinder from pressing directly against the phone/wallet and reduces bulging.

Compartments, structured panels, or semi-rigid inserts distribute pressure and maintain external shape. For instance, a pouch with a rigid back panel and a bottle sleeve on one side means the phone lies against a flat surface and the bottle does not force the phone outwards, producing a much slimmer external profile than a single soft compartment.

• Best results: pouches with a dedicated bottle sleeve or internal divider to separate the cylinder from flat objects.
• Second-best: soft pouches with semi-rigid inserts or foam stiffeners to distribute pressure.
• Least good: a single, unstructured soft pocket — likely to bulge where the bottle presses the fabric.

Specific, actionable advice when shopping or modifying a pouch

1) Shop by layout not by a single minimum triple of numbers. If the pouch description lists internal length, width, and depth, compare those numbers to the measurement you made of your chosen packed layout (phone + wallet + bottle). Remember to include cases and loaded wallet thickness.

2) Prefer mechanical closures (zippers, snaps) plus magnets where possible. Magnets alone are convenient but perform best when used as auxiliary closures in multi-item pouches.

3) Choose structured or semi-structured pouches for a neat external profile. Pouches with an internal bottle sleeve or dedicated phone slot will fit the three items with far less bulging than unstructured single pockets.

4) If modifying an existing pouch: replace weak magnets with higher-rated magnetic modules (match available documented pull ratings), add a stiffener on the phone side, or sew an internal divider to keep the cylinder separated from the phone.

5) For dynamic or high-impact activity, err on the side of redundancy — a stronger magnet rating (200–300 gf or more), plus a zip/snap/strap, is safer than relying on a single weak magnet.

• When buying: request or measure internal usable dimensions and ask about internal compartments.
• When testing: pack the pouch and perform movement tests that match your intended use (walking, climbing machine, short hops).
• When modifying: follow a conservative testing protocol after each change to confirm secure hold and acceptable external profile.

Fitting checklist and a simple packing/test procedure

Use this checklist to make a buy-or-modify decision:

1) Measure phone (with case), loaded wallet, and bottle (length and diameter).

2) Choose orientation (horizontal/diagonal/vertical).

3) Calculate the packed envelope and add 10–20% linear clearance to each axis for flexible pouches (less clearance if pouch is stiff).

4) Check that the pouch internal dimensions meet the calculated required envelope.

5) Measure or test magnet pull. If you can measure pull with a spring scale, confirm a pull rating at least roughly equal to the phone mass plus safety margin (150–300 gf depending on orientation and activity).

6) Pack and perform repeated motion tests to watch for bulging or slipping.

• Clearance guidance: 10–20% linear per axis is a practical rule of thumb.
• Magnet guidance: treat 150 gf as a lower-bound estimate tied to phone weight; prefer 200–300 gf for dynamic use or vertical-hang scenarios.
• Compartment guidance: use separate bottle sleeves or dividers where possible.

Who this approach works for and who should avoid it

This approach is useful for users who want a single compact carry solution and are willing to measure and test. It works best with slim wallets (≤15 mm loaded), slim bottles or bottles that can be packed horizontally, and phones without oversized battery cases.

Avoid attempting to force all three items into a small single-compartment soft pouch if: your wallet is >20 mm thick when loaded, your phone has a bulky battery case, your bottle is oversized (diameter >75 mm), or you plan to do high-impact activities where dynamic forces exceed what a magnet and a soft pouch can safely withstand.

• Good for: commuters and low-impact gym users with slim wallets and standard-profile 600 ml bottles that can lay horizontally.
• Not recommended for: thick wallets, bulky phone cases, oversized bottles, or high-impact activity without redundant closures.

Questions people still ask

This revision clarifies that the numeric values are estimates and provides a reproducible method (measurement, orientation selection, clearance, and testing) rather than a single universal minimum. The magnet guidance is tied to the phone’s mass and a simple pull-test methodology so readers can verify their own pouches.