Our i2 Base layer is made using Activated Carbon derived from bamboo and can be worn alone as a cooling technical layer or under a shell for thermal insulation. Activated bamboo charcoal is naturally and permanently anti-bacterial. It has an extraordinary microstructure that is highly porous and creates a highly absorptive capacity after carbonisation, and becomes even more effective after activation. Bi-component structure for comfort and warmth .Easy care fabric .Stretch fabric, flat locked stitching and low bulk ankle cuffs for comfort .UV protection UPF 50 plus. Embedded with Activated Carbon .Permanent fast wicking performance .Traps odours and is reactivated after every wash.