The Ultra-Sil Nano Poncho was designed to cover you and your backpack while retaining a tiny packed size and remaining extremely light. Made with our 15D Ultra-Sil Nano fabric with fully taped seams, this poncho is ideal for use in hot climates where a regular raincoat just won't offer enough ventilation. Features Waterproof 15D Ultra-Sil Nano fabric Long back panel for use with a backpack Fully taped seams Packs into its own stuff sack