Switchback

The Therm-a-Rest Switchback is a classic closed-cell foam pad, updated with a modern design. It's built for bombproof reliability and simplicity, making it ideal for ultralighters, minimalists, or as a supplementary pad for extreme cold. The updated accordion-style fold and egg-crate pattern pack down tighter than traditional roll-up foam pads, and the peak-and-valley design traps more warm air, boosting its R-value to 2.3 – impressive for a foam pad. It’s made from durable crosslinked polyethylene foam that is virtually indestructible; you can throw it on sharp rocks or use it as a sit pad around the fire without a second thought. Comfort-wise, it's a foam pad, so don't expect the plushness of an inflatable, but it provides a firm, supportive base. It's always ready to use, no inflation necessary, and provides a crucial layer of insulation and protection under an inflatable pad in winter. The main drawbacks are its bulkier packed size compared to inflatable pads and its limited thickness (0.75 inches), which won't appeal to those seeking maximum cushioning. **Highlights** * Virtually indestructible; ideal for rugged conditions or as a ground pad. * Excellent R-value of 2.3 for a closed-cell foam pad. * Accordion-style fold and egg-crate pattern for compact packing and insulation. * Always ready to use; no inflation required. * Lightweight and affordable. * Can be layered with an inflatable for extreme cold. **Watch-outs** * Bulkier packed size than inflatable pads. * Limited comfort compared to inflatable options (0.75 inches thick). * R-value alone is not sufficient for deep winter in most cases.