Long-lasting - Water-based urethane sealant is unaffected by extreme temperatures and keeps moisture out all year longFast Acting - Formula cures in just two hours for an application on tent seams thats quick and easyWaterproof - Provides a water-tight seal that wont peel or crack over time, keeping adventurers warm and dryFlexible - Dries to a clear sealant that flexes with fabric and stays intact without flaking offAll-purpose - Seals nylon, polyester, vinyl, canvas and other outdoor fabrics