2XU Womens Thermal Long Sleeve TopUsing brushed PWX FLEX fabrication for softer, warmer feel + optimal flexibility Greater regulation of core body temperature for comfort + warmth in cool climates High power denier support to forearms, triceps, biceps, pectorals + deltoids Core body support Raglan sleeve construction for unrestricted movement Graduated fit promotes increased circulation Reduces soreness + enhances flushing blood lactates from exercising muscles