At 21/4 pounds, the Hennessy Expedition Hammock is a survival shelter, a comfortable alternative to a tent-particularly in wet or rocky country-or a cozy place for a streamside nap before the evening hatch. With its rain fly and built-in bug netting, the hammock will admirably isolate you from weather and uninvited guests. Its unique feature, however, is a lateral, Velcro-sealed entrance slit. Stick your upper body through the slit, sit down in the hammock, and draw up your legs. Tension keeps the slit closed while you are sleeping, and the Velcro dissuades bugs from getting in when the hammock is empty. Actual set-up time is under three minutes. If you stretch the hammock tight and stabilize it with its two lateral guylines, you don't need to sleep in the typical hammock fetal position but can stretch out, sort of catty-cornered, and sleep deep...ZZZZzzzzz. Priced at $119 from Hennessy Hammock, 888-539-2930; www.hennessyhammock.com.