The Men's Substratum IV Core Stretch Midlayer. Discover ultimate comfort and functionality with this midlayer, crafted from warm backed stretch fabric featuring our Ilus Stretch technology. Engineered for freshness, it includes a synthetic chemical-free anti-bacterial odour control treatment. The high neck provides close-fit comfort, while thumb loop openings at the cuffs keep your sleeves in place and add an extra layer of warmth. Perfect for layering or wearing solo, this midlayer is your go-to for every outdoor adventure. The Dare 2b Men's Substratum IV Core Stretch Midlayer. Discover ultimate comfort and functionality with this midlayer, crafted from warm backed stretch fabric. Engineered for freshness, it includes a synthetic chemical-free anti-bacterial odour control treatment, ensuring you stay confident on the move. The high neck provides close-fit comfort, while thumb loop openings at the cuffs keep your sleeves in place and add an extra layer of warmth. Perfect for layering or wearing solo, this midlayer is your go-to for every outdoor adventure.