Kaitum Wading Boots by Guideline are extremely light and comfortable, made of nylon and reinforced at toe and back. This makes them durable and fast drying. Inside at back and tongue is lined with Lycra. The sole is made of an EVA middle sole and then a felt sole for good grip on slippery stones. aterial: Nylon Outsole: Felt Color: Coal Weight: 795 gram / pair in size #10 Sizes Available: UK 6-15