These NexGrip Ice Avalon 2.0 are in great used condition. Some dirt on the bottom of the sole, but otherwise excellent. Mens size 13.ICE AVALON 2.0 by NEXGRIP with retractable spikes that can be deployed in few seconds. Cleat system with anti-slip technology. Spikes strategically placed at the heel to ensure maximum grip to help prevent bad falls and provide you with a sense of safety while on the go. In order to provide you with an optimal heat satisfaction, there is insulating film of aluminum inside the base of the boot to prevent the cold from penetrating. The addition of the removable insole in polyurethane laminated with Merino wool is the absolute guarantee of comfort and warmth. The upper part of the boot is insulated with Thinsulate™ 200 GR and laminated with Merino wool. The combination of both materials works perfectly to keep your feet dry and warm. In order to ensure the waterproofness of the Nex boots, a waterproof membrane VORTEX is placed inside of the boot to prevent water infiltration. A Comfort Zone up to -35 c°