These Karrimor XLite Running Tights are designed with elastic fabric for a close, compression fit and flatlock seams to reduce irritation. As well, a wide elastic waistband, drawstring, and zip-up ankle cuffs give him a secure fit, mesh paneling allows for ventilation, and a rear zip pocket holds onto smaller valuables. Elastic waistband. Drawstring fastening. Zip-up ankle cuffs . Elastic fabric . Mesh paneling . Compression fit . Flatlock seams . 88% polyester, 12% elastane. Machine washable . Keep away from fire. Imported . NOTE: This product is sold in U.S. sizes. While the physical product may display both the U.S. & U.K. sizes on it, please place your order using the U.S. size.