Your Apple Watch should feel great and look great. The trick is choosing a band that matches your case size and fits your wrist. Here’s the quick guide (with a simple chart) so you can buy with confidence.
1) Check your Apple Watch case size
Look on the back of your Apple Watch (or in the Watch app → General → About). You’ll see a number in millimeters: 38, 40, 41, 42, 44, 45, or 49 mm.
2) Match your case to our band sizes (simple chart)
| Your Apple Watch case | Select this band size on our site |
|---|---|
| 38 / 40 / 41 mm | 40/41/42 mm |
| 42 / 44 / 45 / 49 mm (Ultra) | 44/45/46/49 mm |
Notes & edge cases
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42 mm (older models) uses the larger band family → select 44/45/46/49.
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Ultra (49 mm): choose 44/45/46/49. Most 45 mm‑family bands fit Ultra just fine.
3) Small wrist? Try these comfortable picks
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Slim Sport Silicone Band for Apple Watch – Lightweight, Comfortable & Perfect for Small Wrists
Slim profile = less bulk and a snug, comfy fit. -
ColorVibe Silicone Band for Apple Watch – Soft, Durable & Full of Color
Comes with two lengths (short + long) in the box for an easy custom fit. -
Nylon Sport Band for Apple Watch – Breathable, Quick-Dry & Adjustable Fit
Adjustable hook‑and‑loop closure = dial‑in fit on any wrist.
4) Working out or on the go? These fit AND perform
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Aero Sport Silicone Band for Apple Watch – Breathable Design & All-Day Comfort
Perforated for airflow; great for sweaty sessions. -
AirFlex Sport Silicone Band for Apple Watch – Flexible, Sweat-Resistant & Stylish
Soft, flexible, and secure—moves with you. -
Collections:
5) FAQs
Q: Will a 45 mm band fit the 49 mm Apple Watch Ultra?
A: Yes—bands in the 44/45/46/49 family fit Ultra. Choose 44/45/46/49 on our site.
Q: I have a 42 mm Apple Watch—what do I pick?
A: 42 mm belongs to the larger family. Select 44/45/46/49.
Q: I’m buying a gift and don’t know the exact size.
A: Ask whether they have the small or large watch.
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Small watch → choose 40/41/42 band size
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Large watch (including Ultra) → choose 44/45/46/49 band size
Q: Are your bands compatible with older and newer Apple Watch models?
A: Yes—our bands cover Series 1–10, SE/SE2, and Ultra. Just select the correct size family above.
Ready to find your perfect fit?
Browse Silicone Bands or Nylon Bands and pick the size family that matches your case. If you’re unsure, message us—we’ll help in seconds.
Good to know: We sell third‑party bands designed for Apple Watch. They’re not made by Apple, and watches shown are for display only.