ALSAN RS FLEECE is a proprietary non-woven, polyester reinforcement used in ALSAN RS roofing and ALSAN TRAFIK RS waterproofing applications. Besides improving membrane strength and durability, polyester reinforcement provides additional puncture resistance and flexural fatigue and crack bridging capabilities. ALSAN RS FLEECE is available in a roll or in pre-cut detail kits for corners and small and large pipes.