Both the ColdCure and BFST knee wraps are open wraps adjustable by 2 velcro straps. They can fit up to 26 inches around. They are made of neoprene so there is slight stretch to them as well.
If you need larger than that, you can purchase accessory straps from the shop that will add an additional 8-9 inches.
I hope this information helps, please let us know if you have any further questions.