Petrel UL 10

Our female testers often found themselves sleeping on the chillier side compared to their male counterparts so the Petrel was designed with a bit more fill in the footbox and chest, despite having lower overall volume. Excellent for three-season use, as well as a popular summer bag for the coldest of sleepers.

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  • Mummy shape with #5 YKK two-way, separating zipper with locking sliders
  • Full draft collar provides an extra cushion of down around your neck to trap the heat
  • Trapezoidal footbox allows your feet to fall in a natural pose without compressing the sides
  • Continuous baffles let you position the insulation where you need it
  • 3D contoured hood opens wide for warm nights and cinches tight when the temps start to drop
  • Generous draft tube prevents cold air from seeping past the zipper
  • Overlapping dual-webbing zip guard guides the fabric away from the zipper and eliminates the need for a stiff or heavy fabric layer that can interfere with the draft tube seal
  • Includes storage bag & stuff sack


Temperature Rating 10ºF / -12.2ºC
Dimensions 54" / 56" / 38"
Length Small 5' 3" / 160 cm
Med 5' 9" / 175 cm
Sleeping Bag Shell Fabric Pertex® Endurance UL
Lining Fabric Flite 15 denier ripstop nylon
Fill Power 900+ Goose Down
Fill Weight Small 20 oz / 567 g
Med 21.3 oz / 604 g
Average Weight Small 1 lb 15 oz / 881 g
Med 2 lb 1 oz / 944 g
Packed Size 7" x 14" | 11L
Zip Side Right
Country of Origin Manufactured in the USA from imported materials
Women's Mummy Sleeping Bag Sizing

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Reviewing: Petrel UL 10

Customer Reviews

  1. SO cozy

    by SK on Aug 9, 2015

    If you are even considering a feathered friends sleeping bag just go for it. I needed a highly compressible, ultralight and very warm sleeping bag that fits well in pack and my research kept bringing me back to this company. I purchased the Petrel UL 10 in regular size. I am 5'8" female and there was room to spare in length and plenty of width room (I am 128lbs). I also purchased the Medium sized Sea to Summit Compression/Dry sack with the eVent fabric. This is key as it pushes all the air out as you stuff and tighten things. I cannot believe how beautiful, warm and fluffy my bag ends up after I remove it from the compression sack that I crammed it into. I used it on a group trip and my pack was half the size of all the others. This was kind of a splurge as I already had a decent and somewhat new north face sleeping bag but I wanted something lighter and easier to carry and more moisture resistance as these factors are critical and can make or break your trip.
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