The Sierra Designs Convert 2 is a modular, two-person, four-season(ish) tent with plenty of living space for one and an acceptable amount of living space for two. It's not quite a four-season mountaineering tent, nor is it a three-season backpacking tent. That said, it's suitable for four-season
Sierra Designs Nitro Quilt 35° Review
The Sierra Designs Nitro Quilt is a 22 oz / 624 g, 800 fill power down, three-season backpacking quilt with a 37°F / 3°C comfort rating and 27°F / -3°C limit rating. If you're looking for something warmer, Sierra Designs also makes a 20°F / -6°C version of this quilt. The Nitro has a sewn footbox