Cnoc ThruBottle 1000 vs Sea to Summit Ultra-Sil Daypack 20L
Weight and specs compared for 2026 — and which one to choose.
Hard-sided water bottle with squeezable side walls. One full ounce lighter than V1 model.
Full details →Ultralight packable daypack. Stuffs into its own pouch.
Full details →HikeLoad is reader-supported. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Learn more.
Cnoc ThruBottle 1000 vs Sea to Summit Ultra-Sil Daypack 20L: which should you buy?
If saving weight is your priority, the Cnoc ThruBottle 1000 wins — at 62 g it is 6 g (9%) lighter than the Sea to Summit Ultra-Sil Daypack 20L (68 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest miscellaneous page, or browse the full gear weight database.