SL Activ
A 2.7-2.9 mm leather. The extra thickness and durability of this leather is perfectly suited to stronger hill and mountain walking boots, where extra support and resistance to scuffing is required. Sherpa leather undergoes a full HS12 silicone tanning treatment which, coupled with the extra thickness of the leather, boosts water resistance and stops the leather from wetting out too easily. We recommend the use of SCARPA HS12 cream or Aqueous Nikwax from new.