SOL Says:

Incredibly versatile and only 155g, the Escape Lite Bivvy offers peace of mind and incredible versatility in a small package. Utilising the innovative SOL Escape material, the Escape Lite is highly wind and water resistant, highly abrasion and tear resistant, heat-reflective and breathable at almost half the weight of its big brother. Use the Escape Lite as a performance-enhancing sleeping bag liner, an ultra-lightweight
summer bag or as your fail-safe backcountry emergency bivvy.