X-Bionic Evo Pant Base Layer Leggings Features: Two-Step Front 3D- Bionicsphere system, ISO-Calfpad (TM) anatomically adjusted, enlarged Iso-Pad (TM), ExpansionKnee (TM), Airconditioning Channel, Extended InsulationPads (TM) on the thigh, 3D- Bionicsphere System on the coccyx, Innerlap Airconditioning- Zone (TM), Airconditionspot (TM), Airguides (TM) Materlial Technische Komposition 89 % Polyester 89 % Skin NODOR 3 % Elastan 8 % Mythlan(TM) 8 % Polypropylen 3 % Elastan