Whether you’re training, competing, or recovering, your performance depends on staying in your comfort zone as long as possible. Like the AT Hybrid Vest, the new Gradient Vest has full-length, windproof panels to keep your core warm and stretch side panels for range of motion and comfort. 37.5® insulation is chemical-free and has an extreme weight-to-warmth ratio. Performance clothing powered by 37.5® Technology removes moisture before it turns into sweat, helping you maintain an ideal core temperature so that you can perform your best. Climate control clothing with 37.5® Technology has been proven to decrease the rate of core temperature buildup, increasing athletic performance by up to 26%. Keep your game sharp with this reliable, comfortable, and stylish gear — made for modern golfers who want performance with personality.