The family of TROPOS fabrics continues to grow! Our new TROPOS 3 layer fabric, known as T3, adds a protective polyester tricot lining to the inside of the fabric. Without adding much weight, durability is greatly increased. The movement of moisture vapor (also known as perspiration) is also improved for a better comfort as the temperature of your activity level increases. Two year limited warranty on TROPOS and T3 suits. Made in the USA.