Core Rechargeable Battery Bug One of Darn Tough's most

One of Darn Tough's most tech-savy snow socks

and caving

The HAGAN Hybrid skin is equipped with hybrid adhesive technology

a moderate sidecut and shorter length

Core Rechargeable Battery Bug One of Darn Tough's mostHigh capacity 1250 mAh lithium ion rechargeable battery for Petzl headlamps featuring the HYBRID CONCEPT design: TIKKID, TIKKINA, TIKKA, TIKKA CORE, ACTIK, ACTIK CORE, ARIA 1 RGB, ARIA 2 RGB, IKO CORE, and IKO. Provides excellent lighting performance, even at low temperatures. It recharges directly with the integrated USB port. The CORE rechargeable battery offers an economical, long lasting and sustainable solution.