Under Armour Men's Valsetz Venom Mid Tactical Boot - Size 9 Synthetic Synthetic overlays add support, not weight, and won't absorb moisture Aggressive UA Spine chassis forms a lightweight structure around the sole, delivering incredible support without sacrificing flexibility Durable EVA midsole delivers cushioning and shock absorption, protecting your foot in any terrain Water-resistant, high-abrasion ripstop nylon upper is tough, but breathable, for superior comfort