The TREK -18C/0F LONG sleeping bag is a Sea To Summit model that brings plenty of warmth to your winter nights. It's ideal for camping or traveling by car.

The duck down insulation is treated with Ultra Dry Down for greater water resistance, so you'll be more comfortable even on wet nights. Combined with recycled polyester fabric, it offers enhanced durability and optimized lightness.

It features the Free Flow clear-zip system for easy temperature adjustment, allowing you to configure your sleeping bag in a variety of ways. The semi-rectangular shape adds volume and gives you more freedom of movement while you sleep.