NANO - Small electronics, first aid kits or wallet.
SMALL - Snacks, small electronics or toiletries.
With nano and small volume stuff sacks you could easily manage your personal items. Stash your toiletries, credit cards, cash or electronic devices such as cell phones in the mini sacks and your stuff will stay significantly drier and more organized.

MEDIUM -  Food, Flat Tarp or extra layers
Medium volume ultralight Stuff Sacks are perfect for organizing clothing, such as hats, socks or an insulation layer. Use these sacks as an extra waterproof barrier to keep clothes dry or to store wet gear.

LARGE - Food, books, camera gear or clothing.
X-LARGE - Clothing, kitchen system or UltaMid
Large and X-Large volume ultralight Stuff Sacks do a good job if you want to keep your wet gear away from your dry stuff, carry your food or stash your extra clothes while on a packrafting, thru hiking or multi-sport adventure. Perfect for storing a summer sleeping bag.

JUMBO - Sleeping bag, down clothing or shelter.
Jumbo volume ultralight Stuff Sacks are great storage for a winter sleeping bag or for organizing gear, or use it as a hanging food bag for multi-day backpack or thru hike adventures.