Founded in 2004, Mountain Spring (山之泉) is a specialist outdoor brand dedicated to designing and manufacturing complete sleep system gear for camping and backpacking.

Since launching its first foam sleeping mat in 2004, Mountain Spring has stayed true to a clear belief: outdoor comfort should be earned through professional craftsmanship, bold innovation, and real user experience. For nearly 22 years, the brand has continuously explored advanced materials and new technologies — expanding its product range with a focus on performance, durability, and packability. From ultralight foldable mats that weigh under 100g, to warmer closed-cell foam mats reaching R-value 2.6, and high-insulation inflatable mats with R-value 9+, Mountain Spring offers solutions built for everything from weekend campsites to demanding, changing climates — always aiming to deliver a “home-like” night’s sleep in the wild.