Twinn タープ

I was skeptical about a tarp this light holding up, but it shrugged off a full night of rain without a single drip getting through. Roomy enough that two of us slept comfortably with our packs inside. Packs down small enough to forget it's in the bottom of my bag.

Pitched it in maybe five minutes with just trekking poles and a couple stakes, and it stayed taut all night. Roomy enough for two of us plus packs, which I wasn't expecting from something this light.

Took this on a soggy three-day trip and stayed completely dry both nights. Packs down tiny, and there's plenty of room for two people plus gear without feeling cramped.