The Kilpi TAIL-U is a cap designed especially for running, cross-country skiing or other activities associated with higher physical performance. Lightweight, super flexible material with OPTI-DRY function helps wick moisture to the surface of the material and dries quickly. Flat seam sewing does not press under the helmet. A bonus is the ponytail hole. We offer Kilpi TAIL-U in three sizes for women and men in several color variants with reflective printing. Material composition: 95% polyester, 5% elastane