Sauer’s practical underwear is made of Polartec, a modern,  extremely breathable, body-hugging bi-elastic four-way stretch fabric.  These garments are extremely comfortable to wear. The material thickness  complies with regulations. The fabric is double-layered at the elbows  to provide padding in the prone and kneeling positions. The inside  elbows feature a thin stretch fabric to prevent material bunching. The  composition of this material minimizes the risk of a "throbbing pulse"  caused by the shooting sling in the kneeling and prone positions. The  Polartec fabric fits snugly, keeps the skin dry during physical  exertion, and is windproof and abrasion-resistant.
 										For more comfortable donning, the shirts have a continuous  2-way zipper. Women’s and men’s shirts are cut differently: the women’s  is tapered and the men’s is straight. The men’s shirts have a breast  pocket with a zip fastener. Both the women’s and men’s shirts are cut  longer in the back to keep the back covered when kneeling.
 										The comfortable thermal underpants are also made of  high-quality Polartec material and feature all the positive properties  of this material combination. The pants are mainly seamless to avoid  irritating pressure points and have both an elastic waistband and a  drawstring. As a special feature, they also have a practical seat pocket  with zip fastener. The sizes are unisex.