The re-designed Nitro Echo women's snowboard boot combines a fresh clean look with freestyle performance. The outer TLS and inner ILS systems deliver a precise fit with no heel lift. This boot gives you control wherever you go on the mountain. Key Features of the Nitro Echo Women's Snowboard Boot: Quadra Sole Twin Lacing System (TLS) Tech 2 Flexlight Women's EVA Liner Internal Lacing System (ILS) EVA Molded Shell Tongue Flex: Soft