The CAMP XLC 470 is essentially the 390 with a toe bail that accommodates more boots. This means you can fit it onto boots with oddly-shaped or missing toe welts (looking at you TLT7). CAMP also used boot-length adjustment mechanism that doesn’t require a screwdriver so lets you quickly adapt to your boot quiver. At the expense of a few ounces, you’ll have a crampon that easily adjusts to any ski boot or semi-rigid mountaineering boot. They will stay securely attached to your leg with the ankle harness and the heel tension can be adjusted on the fly.