SLEEPING BAY GROUNDSHEET ($49)

The Single Best Upgrade for Your Sleeping Bay

The Atacama's bathtub floor is waterproof. But without a groundsheet underneath, cold ground and moisture still transfer through — and that's where condensation starts, from below the floor, not above it.

This custom-fit groundsheet sits beneath the sleeping bay, between the tent floor and the ground. It breaks the cold transfer, dramatically reduces condensation inside the sleeping area, and protects the bathtub floor from abrasion on rough or rocky surfaces.

If you're using cots, it matters even more. Cot legs sit directly on the floor. Over time, on harder terrain, that contact wears through. This groundsheet takes that punishment instead.

Why It's Worth $49

— Eliminates direct ground-to-floor contact — the primary source of condensation in the sleeping bay

— Protects the bathtub floor from gravel, rock, and rough surfaces

— Essential if you're using cots — prevents leg abrasion on the floor over time

— Custom-fit to the Atacama sleeping bay — no excess material, no pooling edges

— Clearly marked SLEEP so there's no confusion with the garage groundsheet

— Lightweight 6oz material — adds almost nothing to pack weight

Most condensation issues in tents come from the ground up. This is the fix.

Most riders buy both

Pro tip 

Always tuck any excess material under the tent floor. Exposed edges act as water channels. Tucked edges stay dry.