The SF Bivvi bag is the ideal choice for adventure racers, bushcraft and emergency survival. Specification • Weight: Adult - 340g / 12ozExtra Long - 400g / 14oz• Packsize: 14cm x 10cm / 6" x 4"• Outer Fabric: Paratex Dry• Half centre zip for quick and easy access (perfect for use with the Snugpak special forces range of sleeping bags)• 100% waterproof fabric with a hydrostatic head of more than 5000mm (items with a hydrostatic head over 1500mm are generally waterproof)• Taped & Sealed Seams• Tough• Breathable (will transmit up to 7.5 litres of moisture per m2 per 24 hours)• Soft to the touch• Supplied with own stuff sack• Outer Fabric treated with a Durable Water Repellent (water repellency can be maintained by a cool tumble dry after washing and periodic retreatment with suitable aftercare products such as Nikwax or Grangers)