Every brand sizes differently, contact the store for more info
Attibatex waterproof membrane
ALPI OC system
Upper: synthetic nubuck
Collar: synthetic fur
Inside: real wool lining
Outsole: TPU
Fastener: zipper and laces
Origin: made in Romania
Every Attiba boot comes with an OC Key that helps you to fasten/unfasten the two mobile straps of ALPI OC system and keep outsole's groove spaces cleaned. The crampons are used? Good news, you don't have to buy a new pair of boot, the ALPI OC system is replaceable!