Madshus` line of backcountry boots has a model for all Rottefella bindings! The Fjelltech are compatible with Rottefella standard NNN bindings. Built with an injected plastic cuff, polyamide heel support, and a high cut Revo Wrap innerboot; these boots are stable, warm, and comfortable. The waterproof gaitor and Fleece Softshell helps to keep your feet warm and dry! This model is light, weighing in at only 650g per pair (at size 42).