This PVC vinyl Ground sheet does the lot! If you get lost you'd wish you had this. It can be transform from a simple ground sheet to a sleeping bag and even too a tent (use 2 same size ponchos). It is 100% waterproof and has electronically sealed seams so you know you are going to stay dry! It comes in an Olive Green and is perfect for hiking because it folds up too a tiny 20 cm x 14 cm.