The Sea To Summit Lightweight Dry Sacks are incredible value. Not only are they light but also durable and compact. Once you start using them you’ll become addicted. You can squash these into spots ordinary heavy dry bags won’t go. They are versatile enough to fit into little corners of a sea kayak or light enough to take backpacking or adventure travelling. Suitable to keep contents dry in any wet situation where the bag is not submerged.