Therm-a-Rest Z Lite SOL Regular foam sleeping pad, polyethylene, 510×1830×20 mm, silver/yellow

Therm-a-Rest Z Lite SOL Regular is a closed-cell polyethylene foam sleeping pad sized 510 × 1830 × 20 mm in silver and yellow. The lightweight, accordion-style Z-fold design packs flat and unfolds to provide continuous insulation and cushioning for camping, backpacking and bivouac use. A reflective ThermaCapture™ surface enhances thermal retention by reflecting radiant heat back to the user, while variable foam density — softer on top and firmer on the bottom — balances comfort and durability. The pad resists moisture and compressive wear, making it suitable for repeated use on uneven ground.

Advantages

The Z Lite SOL Regular delivers advanced warmth through its reflective surface and heat-trapping dimples, increasing retained radiant heat by approximately 20% when used with the reflective side up. Its closed-cell polyethylene construction provides reliable insulation even when damp and offers high resistance to tearing, compression and abrasion. The Z-fold shape creates a compact package for easy transport and rapid deployment, and the combination of softer top foam and denser bottom foam gives a practical compromise between cushioning and long-term durability.

Suitable for

• Backpacking and ultralight trekking where low weight and compact packed size are priorities
• Car camping and bivouac use on rocky or uneven terrain
• Emergency or winter kits as a lightweight insulating layer
• Basecamp and overnight hiking trips where durable, maintenance-free insulation is preferred

Key specifications

• Material: closed-cell polyethylene foam
• Dimensions (unfolded): 510 mm × 1830 mm
• Thickness: 20 mm
• Design: Z-fold (accordion) for compact packing
• Surface finish: reflective ThermaCapture™ coating on one side
• Colour: silver with yellow accents
• Construction: softer foam top layer, denser foam bottom layer for durability
• Weight class: ultralight foam pad (lightest closed-cell option in its line)

How to use

Unfold the Z Lite SOL Regular fully and place the reflective side up toward your body for maximum radiant heat retention. Lay the pad on a relatively flat surface, orienting the long edge beneath your torso and legs. For ground protection and added comfort, use inside a sleeping bag or under a sleeping bag liner. When packing, fold the pad along the factory crease into its Z-shape and secure in a sleeve or strap to keep it compact. Clean by wiping with mild soap and water, then air-dry completely before storage.

Usage recommendations

For best thermal performance, position the reflective ThermaCapture™ side up toward the sleeper. Combine the Z Lite SOL with an appropriate sleeping bag rated for the expected temperatures to achieve the intended warmth. Store flat or rolled loosely to avoid permanent creasing, and avoid prolonged exposure to direct sunlight when not in use to preserve the reflective coating.