Sea to Summit Ultra-Sil 18L Nano Daypack

Editors' Choice update
Ultra-Sil 18L Nano Daypack


Weight 1 oz



We gave this pack’s cousin, the Ultra-Sil Daypack, an Editors’ Choice Gold award in 2017 for its durability and versatility in a tiny package. Sea to Summit improves upon that in the Nano, halving the weight and making it even more packable (it stuffs down to the size of a hacky sack). “I stored it in my bike’s tool pouch, and then pulled it out for hikes up to scenic lookouts,” one tester said after her five-week bikepacking trip through Central Asia. The wispy, 15-denier nylon (the regular Ultra-Sil has 30-denier fabric) is strong for its weight, and ours didn’t suffer any rips. The Nano fits a puffy, sandwich, water bottle, and hat, and its unpadded shoulder straps comfortably support loads up to 20 pounds.