Thermarest slacker super snuggler double your warmth for cold off the ground adventures with this thick hammock underquilt product details to keep your underside extra warm on your free swinging camping adventures the thick fully adjustable slacker super snuggler hugs the bottom of your hammock and traps your bodys radiant heat with an added thermacapture tm lining giving you the love and added insulation needed for a great nights rest even on those extra cold nights added warm