FYISWHO 20mm Magnetic Nylon Watch Strap with quick fit for Polar & Withings smartwatches
Product description
What it’s for (and the main idea)
A magnetic watch strap is a simple upgrade when you want something that’s easy to put on, comfortable for everyday wear, and practical for training days. This FYISWHO replacement band is built around a 20mm fit and a magnetic clasp, using a nylon sport feel aimed at being light, breathable and easy to rinse off after a sweaty session.
On paper, it’s positioned as a straightforward alternative to silicone-style bands: softer against the wrist, less “sticky” for hot weather, and generally easier to keep clean. It won’t turn your smartwatch into a fashion statement overnight, but it can make daily use less fiddly—especially if you swap straps by mood.
Compatibility you should double-check first
The compatibility list in the product name and description is quite specific, and there are clear exclusions. It’s described as compatible with 20mm straps for: - Polar ignite / ignite 2 / ignite 3 / Polar Unite / Polar Pacer (NOT for Polar Pacer Pro) - Withings ScanWatch 2 42mm / Withings ScanWatch 42mm / Withings Steel HR 40mm / Withings Steel HR Sport
At the same time, the description explicitly says NOT compatible with: - Withings ScanWatch 2 38mm and Withings ScanWatch 38mm - Withings Steel HR 36mm
So if you’re shopping based on the “series” name alone, it may be worth slowing down and matching the exact model and size before you buy.
The comfort and material: nylon that’s meant for motion
This band uses a nylon material described as soft, flexible, lightweight and breathable. It’s also stated to be washable and designed not to irritate the skin or rub against the wrist like some harder-feeling plastics can.
In real-world terms, that points towards comfort for day-to-day wear and workouts—think quick walks, gym sessions, and even errands where you’d rather not worry about sweat build-up. The description also mentions it dries quickly, which is handy if you rinse it after a run.
How the magnetic clasp changes everyday use
The magnetic clasp is the headline for day-to-day convenience. According to the description, the strap is easy to assemble and remove without extra tools, and you can replace it quickly (they mention around 10 seconds).
For many people, the practical advantage is not having to fight a traditional pin-and-buckle setup while you’re getting ready. You can also use the buckles to adjust length, and the magnetic closure is meant to be quick in use.
It’s worth noting, though, that magnetic straps can be a bit of a personal preference: some people get on with them instantly, others simply prefer mechanical closures.
Colour options and what they really help with
The band comes in multiple bright sports colours. That’s not just a styling detail—having different colours makes it easier to match your strap to gym gear, work outfits, or weekend wear without committing to one look.
If you like variety, this is the kind of accessory that makes strap swapping feel normal rather than a chore.
Who it suits, and who should skip it
It’s a good fit if you: - want an easy-to-fit replacement strap for a compatible Polar or Withings model - prefer a nylon sport feel that’s described as breathable and washable - like the convenience of a magnetic clasp for quick on/off
You may want to skip it if you: - have one of the explicitly excluded models/sizes (like the listed smaller Withings ScanWatch variants) - are set on a specific strap width beyond the 20mm fit referenced here - want a strap that’s designed around a particular high-end build focus (this is more of an everyday replacement approach than a “performance strap” claim)
Final verdict
Should you buy it?
This FYISWHO magnetic nylon replacement strap makes sense if you’re looking for a practical 20mm band with a magnetic closure that’s meant to be comfortable for training and simpler for quick strap changes. The fact it’s described as washable and quick-drying is the kind of detail that matters on busy weeks.
Just don’t rush: the compatibility and exclusions are specific, so matching your watch model and size is the main thing to get right. If you’re uncertain, it’s safer to confirm the exact model/size first rather than rely on the broader product naming.
FAQs
How easy is it to fit?
The description says it can be assembled and dismantled without tools, with a fast swap time of around 10 seconds.
Is the strap comfortable for sweating?
It’s described as breathable and designed to dry quickly, with a nylon feel meant to avoid irritation or rubbing.
Does it come with multiple colours?
Yes, the listing mentions multiple bright sports colours so you can tailor the look to what you’re wearing.
Which models are not supported?
The description explicitly excludes Withings ScanWatch 2 38mm / Withings ScanWatch 38mm and Withings Steel HR 36mm, and also says NOT for Polar Pacer Pro.