The Leatt MTB Gravity 5. 0 Jersey is a long sleeve MTB jersey for hot weather rides. Breathable elastic mesh covers the body, a semi-compressive stretch knit covers the sleeves, and just two panels of fabric form the slim 3D anatomic fit. What Our Gearhead(R) Experts Are Saying:"On a hot summer climb the jersey stays out of my way, because the stretch moves with me and the collar and hem have no seams to rub. I leave the sleeves down all ride, since the knit lets heat out instead of trapping it."