big and expensive but hurrah, it WORKS!

The problem with most wrist wallets is that unless you have a huge wrist, when you fasten them to your wrist, the wallet contours to your wrist and you don't have much continuous FLAT space to accommodate 3" car key. The result is not only uncomfortable, unsightly, but also untenable because the pointed end of the key is bound to make a hole in the fabric sooner or later.This is the only wrist wallet Amazon carries that lists its actual width as being 3.75" --- which would be ample for 95% of keys out there. Don't know if it has a terry liner to soak up sweat while exercising though, since it's not being marketed as a "sports" accessory but more of a travel accessory.