コンプレッションキャップ

Took these on a week-long backpacking trip and they kept my clothes compressed down to a fraction of their normal size, even after stuffing the bag full. The ability to pop them on after cinching the dry sack is a game-changer for packing efficiency.

Wasn't sure these were worth the extra weight until I stuffed a week of clothes into my dry sack and it actually stayed flat the whole trip. Snapping them on takes two seconds and the sack never puffed back up in my pack.

These caps turned my half-empty dry sack into a rock-hard brick that slides into the bottom of my pack with room to spare. Screwing them onto the already-compressed sack takes seconds, and everything stays tight for the whole hike instead of slowly puffing back up.