Elastic band with non-slip dots on the bicep and stretch wrist cuff to keep the sleeves in place and prevent them from sagging. High stretch nylon material with 4-way stretch points to fit users' arms. Tapered design, wider on the bicep and tight on the wrist, to fit the natural arm form. Breathable and lightweight material provides good dexterity and all-day comfort. Elastic thumb loop avoids pressure points when using gloves. Sun UV rays protection with UPF 50+ according to BS EN 13758-1:2002 +A1:2006 for the covered part of the arms. European Certified for cut protection: EN ISO 21420, EN388:2016 (3X42E), UKCA.