The STX Cell IV Arm Guards are designed to be light, flexible, and comfortable. With new GeoFlex II technology, these gloves are lighter and 25% more flexible. A new breathable protection system allows air to flow through the pad to help keep you cool and dry. In an effort to reduce bulk on the Cell IV arm guards, STX has introduced a hard-plastic elbow cap that is contoured and low profile. This arm guard has two separate features which ensure that the pad will stay in place. The first feature is the use of dual straps which can be adjusted to provide the perfect fit for you. The second feature is the use on silicone tape inside the sleeve, which will grip and keep these pads in place. For the sleeve on these pads, STX has included a full-length lycra sleeve which provides excellent comfort and moisture management.