Sleeping bags for backpacking can be extremely expensive. Fortunately, the Marmot Trestles 30 isn’t. The Marmot Trestles 30 Synthetic Sleeping Bag is suitable for overnight summer surfing adventures, backpacking trips in the shoulder-season and mountain forays. Starting on the trail is light enough and convenient enough for casual car camping trips, and it comes at a price that will not ruin your summer roaming budget. The plastic isolation and wave design of the Trestles Spirafil provides protection from mild weather, and it maintains loft even if it gets slightly wet.