There is yet another feature known as groundsheet heat.    From Wordnik.com.  [Coolest Gadgets] Reference

The groundsheet is now a polyester inner groundsheet which is lightweight and comfortable whilst giving an increased water repellancy of 10,000HH.    From Wordnik.com.  [ReadABlog.com New Blogs and RSS Feeds] Reference

I close-up my hookahs on the groundsheet of the landfall.    From Wordnik.com.  [Parajanov Contra Zizek (oder selbst proclaimed Brechtian Beast Z vs aSublime moving picture for magnitude of efficacy.)] Reference

I suppose you couldn't hire us a groundsheet or two and a few rugs?.    From Wordnik.com.  [Five On A Hike Together]

A groundsheet, a fan and some beer for the perfect fireworks viewing.    From Wordnik.com.  [Fast food at firework festivals] Reference

I stand in the high groundsheet of the landfall and stretch my limes.    From Wordnik.com.  [Parajanov Contra Zizek (oder selbst proclaimed Brechtian Beast Z vs aSublime moving picture for magnitude of efficacy.)] Reference

He replaced the binoculars in their leather case and folded the groundsheet.    From Wordnik.com.  [The Alamut Ambush]

But Inman, wrapped in his groundsheet, walked on, looking for a likely barn.    From Wordnik.com.  [Cold Mountain]

'– We'll just carry them off the path – down there – in the groundsheet.    From Wordnik.com.  [The Alamut Ambush]

A groundsheet, a fan and some beer for the perfect fireworks viewing | 世論 What Japan Thinks.    From Wordnik.com.  [Fast food at firework festivals] Reference

There's normally a groundsheet down here, but in summer we don't bother with it if the grass is good.    From Wordnik.com.  [Thereyougothen....] Reference

You see all kindnesses of stunner in the landfall and that's some of the stunner on the groundsheet there.    From Wordnik.com.  [Parajanov Contra Zizek (oder selbst proclaimed Brechtian Beast Z vs aSublime moving picture for magnitude of efficacy.)] Reference

Conrad draped the front of the car with a heavy groundsheet which effectively brought the temperature down by ten degrees.    From Wordnik.com.  [Smokescreen]

He wrenched the groundsheet back, scattering the bracken and sending arrows of pain up his left side from the mangled buttock.    From Wordnik.com.  [The Alamut Ambush]

Evan took the groundsheet off my car and spread it over the roof of the station wagon, as much to shut out the heat as for shade.    From Wordnik.com.  [Smokescreen]

As if the thought focused his vision he saw just to his right the Israeli's feet sticking out from under the edge of the groundsheet.    From Wordnik.com.  [The Alamut Ambush]

ROSKILL LAY ON a groundsheet in the soaking bracken, watching Mrs. Maitland shepherd her children into her Volkswagen half a mile below him.    From Wordnik.com.  [The Alamut Ambush]

Like a hammock, the tough material of the groundsheet easily supported our weight, even with all the contortions I had to go through to get Anders into the sleeping bag.    From Wordnik.com.  [The Year's Best Science Fiction 23rd Annual Collection]

Within minutes, the water rose over our groundsheet.    From Wordnik.com.  [Travel news, travel guides and reviews | guardian.co.uk] Reference

Here I used a Tyvex groundsheet and my old Therm-a-Rest Prolite.    From Wordnik.com.  [Backpacking Light Magazine] Reference

Pitching tip: Never pitch your tent on a severe slope, especially if you have a greasy groundsheet.    From Wordnik.com.  [Travel news, travel guides and reviews | guardian.co.uk] Reference

The groundsheet is fitted with a heating element to keep you cosy and warm on even the coldest night.    From Wordnik.com.  [British Blogs] Reference

Basically, you need a groundsheet, a sleeping bag, a tarp, water filter or tablets, and not much more.    From Wordnik.com.  [Nicholas D. Kristof] Reference

Rest of the time it's something like: doss bag rations spare clothing basha/groundsheet mission essential kit.    From Wordnik.com.  [Army Rumour Service] Reference

The Vango Orchy tent also features a sewn in groundsheet, keeping the weather and bugs out giving a nice family environment.    From Wordnik.com.  [ReadABlog.com New Blogs and RSS Feeds] Reference

The concept Glastonbury Solar tent uses photovoltaic fabric, glo-cation technology, a wireless control hub, and groundsheet heat.    From Wordnik.com.  [Pulse2 - Technology News And Reviews] Reference

So we set out a groundsheet and our sleeping bags on the soft grass of a ridge, so that the winds would blow the mosquitoes away.    From Wordnik.com.  [NYT > Opinion] Reference

Tipis come complete with groundsheet and raincatcher, along with free use of the solar showers and discounted use of the yurt sauna.    From Wordnik.com. Reference

After slightly sleeping in, I crawled out of the tent (dry inside but a very wet rainfly and groundsheet) to find snow on the hills above camp.    From Wordnik.com.  [TravelPod.com TravelStream™ — Recent Entries at TravelPod.com] Reference

The hub also controls a heating element embedded below the tent's groundsheet that is triggered when interior temperatures fall below a certain level.    From Wordnik.com.  [Fast Company] Reference

Coleman claim they were the first to integrate a groundsheet into the tent creating a 'sewn in effect' that is now copied right across the tents industry.    From Wordnik.com. Reference

Reinforced PVC groundsheet 250g/m2.    From Wordnik.com.  [18. Supplies and Transport] Reference

Dr. Curtis covered the body with the groundsheet.    From Wordnik.com.  [Scales of Justice]

20 seconds Built-in groundsheet for extra warmth and comfort Effortlessly set up in less than.    From Wordnik.com.  [WN.com - Financial News] Reference

> PE waterproof groundsheet 5000HH minimum ensures dry inner tents.    From Wordnik.com.  [ReadABlog.com New Blogs and RSS Feeds] Reference

> Sewn-in groundsheet fully enclosed to protect against unwanted draughts and bugs.    From Wordnik.com.  [ReadABlog.com New Blogs and RSS Feeds] Reference

Tent groundsheet.    From Wordnik.com.  [TravelPod.com TravelStream™ — Recent Entries at TravelPod.com] Reference