100% Waterproof knee length sock with a dense resilient terry cushioned footbed, heel and ankle, this sock is ideal for outdoor activities where a balance of warmth and breathability are desired Comprising 3 layers the Midweight knee length StormSock features a dense resilient terry pad footbed, heel and ankle for warmth and cushioning The outer layer sock, made from nylon, protects the Hydrotech waterproof breathable membrane against abrasion from the boot. Lycra knit through every course gives the sock Bridgedale's performance fit and together with the flat toe seam and elastic arch support ensure the sock remains in place and doesn't cause any hotspots. The stretch PU membrane and clever matrix lamination process that bonds the three layers of Bridgedale's Stormsock together ensure they have class leading stretch built right in, wear after wear. Giving full lower leg coverage and protection up to the knee these socks are perfect for wading in rivers and streams or for when the weather turns particularly bleak and cold and you still want to run or ride in shorts. FEATURES: 3 LAYERS FOR WARMTH Outer : 95% Nylon, 5% Elastane; Inner : 54% Merino, 36% Polyester, 7.5% Nylon, 2.5% Elastane; Membrane : 100% PU 100% WATERPROOF The HydroTech PU membrane allows perspiration to pass to the outer layer of the sock while preventing outside water from getting inside DURABLE: An extremely durable and long lasting outer sock protects the Waterproof Membrane against abrasion from the boot MIDWEIGHT: Designed for 3 season hiking and trekking in all conditions, our Midweight Bridgedale's offer a balance of high wicking yarns to manage variations in temperature that cause feet to sweat and resilient cushioning throughout the foot bed and around the ankle to keep the foot comfortable in leather and synthetic footwear. WATERPROOF AND BREATHABLE: Membrane Breathability: Moisture permeability >15,000g/sqm/24h; Membrane Waterproofness: Hydrostatic head >10,000mm WINDPROOF: Prevents wind chill, the lowering of body temperature due to the passing flow of cool air across the skin, exacerbated when skin is wet PERFORMANCE FIT: Every course has LYCRA running through them giving StormSock stretch, making them easy to pull on and off and they won't fall down, giving you a snug and comfortable fit PERFECT FOR OUTDOOR ACTIVITIES: StormSock is ideal for any adventurer whether you are walking, hiking, hunting, running or biking and wanting to give your feet some well needed protection from the wind, the cold and the wet PRIMARILY KNIT FROM MERINO WOOL: features anti-bacterial, anti-odor and moisture management properties, will keep your feet warm, dry and comfortable