You can find XXL hip protectors, but the selection is definitely more limited—several brands max out at XL, so you'll want to check size charts before getting your heart set on a model. XXL typically fits waists around 112–125 cm and hips around 120–130 cm, giving you extended coverage across a broader area.
The key thing is getting pads that actually sit over the greater trochanter—that's the bony bump on the side of your upper thigh where hip fractures happen. If the shorts are too small, pads ride up and miss the target entirely. A proper XXL should give you full, correct coverage without the compression shorts feeling restrictive.
Measure your waist and hips at their widest points, then compare against each brand's specific chart—sizing varies a lot between manufacturers. When in doubt, size up slightly. It's better to have a snug-but-comfortable fit that keeps pads in place than to squeeze into something too small that shifts around in a fall.