Moutain Spring 鹰 Ying 99g Ultralight Folding Mattress

Mountain Spring Ying (鹰) is an ultralight roll-style foam mat made for fast packing and daily versatility.

Ying (鹰) means “eagle”—swift, precise, and light over the ridgeline. This foldable closed-cell foam mat delivers near-weightless utility with a clean white finish and a fast, fold-and-go design that disappears on or in your pack. The PE closed-cell build shrugs off moisture, won’t soak up water, and adds dependable ground insulation on rough camps.

Use it solo for minimalist nights, as a sit/kneel pad around camp, or layer it under an inflatable to boost warmth and protect against punctures with almost no penalty. Simple, tough, and ultralight—exactly what you want when the day runs long.