Yes, this can be used without any worry
Yes, the BTwin MTB ST 20 High Frame cycle is available in multiple sizes, including L size.
The BTwin MTB ST 20 cycle good cycle for adults, but do take a test ride to check whether it is suitable for you or not. Click here to know more -> https://www.91wheels.com/cycles/btwin/mtb-st-20-high-frame-26-inch