Black Diamond Hooped Bivy

Bentgate.com says:
Compact ultralight stormproof bivy sacks Hooped Bivys use a sewnin flexible wire a dualslider zipper that opens in the middle and a noseeum mesh covered opening gives you some adjustable breathing space Its built from waterproof windproof and breathable ToddTex with a polyurethanelaminated floor For security the double storm flap and rain gutter use a seamless construction and all other seams are factory taped Features Sewnin flexible wire creates air space Dualsided zipper and mesh covered opening ToddTex singlewall fabric Taped seams