BYISYUE 20mm Leather Watch Strap for Polar Ignite 3 / Ignite 2 / Ignite / Pacer / Unite & Withings ScanWatch 2 42mm

What this strap is for

If your smartwatch strap has seen better days (or you simply want a different look for weekends, work, or training), a 20mm leather replacement can be an easy upgrade. This BYISYUE leather watch strap is designed as a sport replacement band for specific Polar and Withings models, aiming to swap out a compatible silicone-style strap for something with a more classic feel.

On paper, it’s the sort of band you’d buy when you want day-to-day comfort and a more understated style, without going into custom work. It’s also positioned for regular use, including activities outdoors—running, cycling, walking, and travel—so you’re not limited to office wear.

Key points to know before buying

Compatibility is the main thing to get right here. The listing is specific: it states compatibility with Polar ignite / ignite 2 / ignite 3 / Polar Unite / Polar Pacer (but not Polar Pacer Pro). On the Withings side, it mentions Withings ScanWatch 2 42mm and also Withings Steel HR 40mm / HR Sport, with stated exclusions for smaller ScanWatch variants and certain Steel HR sizes.

If you’re the kind of buyer who swaps straps often, the design notes also matter. The strap uses a new closure design with a locking mechanism, and the listing claims a more secure fit so the watch is less likely to slip off if the strap is loose. It also says installation is straightforward and removal is done with a one-button action.

It’s not perfect, though: because the key details are model- and size-specific, a quick mismatch could leave you with a strap that doesn’t fit as intended. Double-check your watch model and size first, rather than relying on the 20mm measurement alone.

Leather feel and daily comfort

The strap is made from leather described as high-quality, durable, dust-resistant, waterproof, soft, and lightweight. For everyday wear, that combination is the obvious appeal: leather can feel more comfortable and “put together” than many sport bands, while the lightweight build helps if you forget you’re wearing it.

For training and outdoor use, the listing also leans on practicality. The strap is presented as suitable for all-day use and regular wear, and it’s suggested for activities like cycling, climbing, walking, and even camping. Realistically, leather care depends on how you use it (sweat, weather, and storage habits), so it’s worth treating it gently compared with a pure silicone strap.

What stands out in use

There are two parts of this strap that are likely to be the difference-makers day to day.

First, the look: the listing highlights multiple rich and muted colours, described as elegant and modern. If you like matching your watch to your outfit, this is an easy way to switch the vibe without changing your device.

Second, the closure and security: a locking band design with a stronger fit is useful if you’re active or you just tend to wear your watch snugly but don’t want to worry about looseness. It’s a sensible claim for a replacement strap, where fit quality often determines whether the upgrade feels “worth it”.

Where it makes sense (and where it may fall short)

It’s a good fit if you want a 20mm leather replacement strap for one of the listed Polar or Withings models, and you care about a more classic look than standard sport bands. It suits both everyday wear and casual outdoor activities, especially if you like swapping colours to match what you’re wearing.

You may want to skip it if: - your watch model is one of the explicitly excluded sizes/variants (the listing draws several lines here), - you need a strap that behaves exactly like fully waterproof sport silicone in heavy wet conditions, or - you’re not confident checking model compatibility before purchase.

Practical example: quick strap change for the week

A typical use case would be: you wear the original band during the workweek, then swap to a leather colour for weekends. Since the listing says installation is easy with direct fitting and removal uses a one-button action, you can switch it without it turning into a long chore—handy if you’re commuting or travelling and want a different style with minimal effort.

Is it worth it?

Worth considering if you’ve got a compatible Polar ignite / Ignite 2 / Ignite 3 / Unite / Pacer or a listed Withings ScanWatch 2 42mm / Steel HR 40mm / HR Sport, and you want leather for a more refined everyday look while keeping a sport-friendly approach to use.

Not the best choice if you’re buying for a non-listed model or excluded size, because compatibility is explicitly restricted. Also, if your main priority is a strap that behaves like traditional sport silicone in the toughest conditions, this may end up feeling like it needs a bit more care than you’d like.

Mini FAQ

Does it fit all Polar and Withings watches?

No. The listing specifies compatibility with certain models and sizes and explicitly excludes others, including Polar Pacer Pro and some Withings variants.

Is it suitable for exercise?

The strap is described as suitable for training and all-day regular use, including outdoor activities like running, cycling, climbing, and walking.

Is the strap easy to attach and remove?

The listing states installation is direct and extraction is possible with a one-button action.

What material is it made from?

It’s described as leather, with the listing also mentioning dust-resistant and waterproof properties.

What’s the main reason to choose leather here?

If you want to change the look of your smartwatch and you prefer a softer, lighter, more classic strap feel than standard silicone bands, leather is the clear draw.