We grabbed a few of these for the kids' backyard campout and the 71" x 30" size fit my 10-year-old with room to spare. The weatherproof shell held up fine through a damp night, and they rolled back into the stuff sacks easily.
Eli★★★★★
Tossed one of these in the truck for a chilly night at the trailhead and it kept me warm till sunrise. The 71" x 30" size fits my tall husband fine, and the weatherproof shell shrugged off the light drizzle.
Emily V.★★★★★
Bought a batch of these for a family camping trip and the weatherproof shell held up fine through a soggy night. The stuff sacks are a nice touch too since everything packs down small in the trunk.