The REI Co-op Flash Air 2 Tent is a two-person hybrid single/double-wall shelter with dual entrances and vestibules. It is non-freestanding and can be pitched with two trekking poles to save weight or by using the included pole set.
Outdoor Research Stargazer AscentShell Bivy Review
The Outdoor Research Stargazer AscentShell Bivy (18.9 oz / 536 g, $259) is one of the few waterproof-breathable bivy sacks on the market that weigh just over a pound and also includes mosquito netting and a headroom-extending pole.