evo.com | Halfdays Mid-Layer Tops > The Halfdays Johnson 2.0 Top is the seamless base layer that sets up every outfit, cut from recycled nylon/spandex with a two-tone raised rib texture. A mock neck, wicking finish and silicone grip at the hem keep it smooth and in place under your shell. Slim Fit Medium Compression Mock Neck 92% Recycled Nylon / 8% Spandex Seamless Construction | Women's Halfdays Johnson 2.0 Top 2027 - X-Small Blue | Nylon/Spandex