Larger strap recommendation

[Efejota]

Hi. I find it impossible to wear my S9P over my winter jacket, as the strap is not long enough. I have been looking around and see two possible alternatives.

(1) Buy the official Suunto strap, which comes in two different lengths. I guess that the big one is long enough, as the standard “almost” fits

(2) Buy an alternative strap of 22mm, velcro and elastic, that I think to be the perfect option. The problem here is:
(a) finding an alternative -this looks good: https://www.amazon.es/Correa-Pulsera-Nailon-Forerunner-Instinct/dp/B09FKWSGTF/ref=psdc_9751865031_t1_B09BJPBDN3?th=1-; and
(b) the quick release pins. I can find some in Amazons, but I am afraid of not being strong enough.

Of course official strap is terribly expensive, although, in the end, trying to save 20€ in a watch of this price with low quality straps seems a bit stupid. I am more concuerden about the strap itself. Velcro seems to be a perfecto option.

Any advice? Any alternative? I am not so confident in attaching the watch to the backpack or similar alternatives, much riskier in terms of loosing the watch while exercising or damaging it when taking the backpack off.

Thanks a lot

J