Sleeping Bag Liner 3F UL GEAR Tyvek Sleeping Bag Cover Liner Waterproof Bivy Bag Camping Bags Ventilate Moisture-Proof Warming Every Dirty Inner Liner BIVY Sack (B Type)

- bivy sack - Imported - Type A,Size: 180cm*80cm, material: DuPont TYVEK, Receive the size: 16cm*8.5cm, Weight: 130g - Type B,Size: 230cm*90cm ,material: DuPont TYVEK, Receive the size: 16cm*8.5cm ,Weight: 200g - Product features: Super light , Prevent condensation , convenient ,Ventilate , Every dirty , Heat preservation - Notice: Use with a sleeping bag, not alone! It is recommended to be used with tents or tarps! Its main function is to prevent the condensation inside the tent from entering the sleeping bag, rather than to prevent rain and water splashing! - Note: This is just an ultra-light sleeping bag set, not including sleeping bags! !