This 4Season system has advantages when you find yourself in colder weather than expected. It can be adjusted to a wide range of temperature conditions without adding weight or bulk. 

With just the oversize open cell foam pad, most people are comfortable down to about 40 F / 4 C.  Adding the space blanket under the pad should take you down to below freezing. The space blanket can be placed above or below the pad depending on the temperature, humidity and what works best for you.

If you have been wearing a jacket during the day, spread it out on top of the open cell foam pad or anything else in your pack that has insulation value such as extra clothing, towel, hat or socks to get you down into the twenties, maybe even lower. The pad can be stowed in the compression sack when not needed or left at home. If it’s a relatively warm night, you may want to let the trapped air space between the two layers keep you cozy.

Also, we have included a 8” / 18cm diameter compression sack. This allows the hammock and the 40 inch / 100 cm wide insulation pad to be folded in half lengthwise, rolled up and easily slid into the compression sack, pushed down and closed with a drawstring. Finally, the cap is pulled over the top of the compression sack and the straps tightened to about 16” / 40 cm in length.

Please note: The 4Season hammock employs a different storage system. The hammock / foam pad should be stored in the compression sack and the rain fly should be stored in the SnakeSkins. This assures that your hammock and pad will always be dry and your wet rain fly is stored inside the SnakeSkins on the outside of your pack. When you get to camp, first set up the rain fly in the rain, and then move in under the fly to set up the hammock out of the rain.

Patented Features
Tom knew that the people of Central America sleep diagonally in their hammocks. So, with that knowledge, he changed the shape of his hammock into his patented asymmetrical design which lets you lie level on the diagonal with excellent support under your lower back and knees.

Because tree spacing is always different, the curve of a hammock is always different. The patented structural ridge line ensures the same shape every time you set up your hammock. This is the first time in history that you have the exact same comfortable bed every night and a perfect setup every time

Asymmetrical hammock shape (US Patent US6865757B2); Structural ridge line patent (US patent US20090165205A1) Also patented in the UK, EU, AUS/NZ, and Canada.

• Height Limit: 7 ft / 213 cm
• Weight Limit: 300 lbs / 136 kg
• Packed Weight: 5 lb 8 oz / 2496 g not including free 4 oz / 112 g webbing straps
• Packed Size: 8" / 20 cm diameter x 15" / 38 cm
• Hammock Fabric: 1 layer of 70d nylon taffeta and 1 layer of 40d nylon taffeta
• Bottom Fabric Dimensions: 130" x 59" / 330 cm x 150 cm
• Mesh: 30d polyester No-See-Um netting
• Suspending Ropes: 120" / 305 cm long, 1800 lb / 818 kg test polyester rope
• Webbing Straps: 2" x 42" / 3.8 cm x 107 cm black polyester
• Rainfly Weight: 25 oz / 710 g
• Rainfly Fabric: 70d polyurethane coated polyester ripstop
• Rainfly Dimensions: Size 143" on centerline x 120" wide symmetrical hexagonal shape
• Color: Titanium grey hammock with red lining and titanium grey fly with black trim
• Stuff Sack: Logo and set up instructions printed on black polyester ripstop compression sack with grey end caps and red nylon compression straps 3.5 oz / 100 g

Now you can mix and match hammock parts for your specific needs. As you will see, sometimes there is only a small price increase to get exactly what you want instead of buying more than you need.

FREE LONGER WEBBING STRAPS: Our stock webbing strap is 42" / 107cm which is fine for trees up to 14" / 36cm in diameter. Now you can get a free upgrade to longer 72" / 183cm straps for trees up to 24" / 60cm in diameter or 96" / 244cm straps for trees up to 36" / 91cm in diameter.

WHAT'S INCLUDED: The 4Season Explorer Zip XLcomes complete with attached mosquito netting, detachable rain fly, support ropes, and compression sack with set up instructions on back. Hennessy Hammock also provides complimentary standard 42" / 107 cm long "Tree Hugger" webbing straps to protect the bark of trees. Because these accessory webbing straps are complimentary, they are weighed separately from the hammock.

The 4Season Explorer Zip XL also includes an oversized 36" / 91cm wide open-cell foam pad, and a heat-reflecting space blanket.