Outdoor Vitals Company Info

StormLoft™ 0°-30°F Down UnderQuilt

  • Cadillac of UnderQuilts: The new StormLoft™ underquilt not only features premium treated down, but features the best materials in a superior baffling design for the most warmth and least weight!
  • Lightest Weight Fabric: Feel as light as a feather while packing our new lightest weight fabric, 10 denier ripstop nylon!
  • STORMLOFT™ DOWN: Certified 800+ fill power down both responsibly sourced and DWR treated. Enjoy lighter packs with premium quality down that is more resistant to moisture!
  • Hybrid Baffle Design: Stay warm everywhere with our vertical baffling system that optimizes both the stability of down for warmth and minimizing seam weight for lighter packs!
  • Small In Your Pack: Your back will thank you for using premium ultralight materials and so will your backpack because these materials compress smaller taking up less space in your backpack!


The Ultralight StormLoft™ Down Underquilt will lighten your pack and improve your sleep with its ultralight design and materials! Our goal was to source the lightest weight fabrics (10D ripstop nylon) and insulation (800+FP down) and then craft them into an ultralight designed underquilt.

The ultralight StormLoft™ underquilt will enable you to shed pounds out of your pack helping you go farther, faster and with less fatigue. The long vertical baffles and contoured cuts keep the down locked into place and reduces the weight even further!

The fully integrated suspension system allows you to quickly adjust the quilts height and tightness with one adjustment point. You can then seal out any drafts with the draft baffle and bungee adjustment!

Live Ultralight by going farther and sleeping better with the StormLoft™ Ultralight underquilt!

Product Features 

  • Fully baffled design to keep you warmer and ensure a better night’s sleep, which means you’ll be more able to enjoy your adventures the next day!
  • Body mapping contour baffles that will fit your body shape as you relax in your hammock!
  • Fully integrated suspension system that’s easy to adjust to get the perfect hang and thus the most comfort possible!
  • Adjustable draft collar to seal in heat so you can seal in heat and stay cozy on those cold nights!
  • Utilizes DWR treated 800+ fill power down that will keep you warm and your pack light so you can more fully focus on your adventures!
  • DWR water resistant coated 10 Denier Ripstop Nylon shell makes it hard to get the quilt wet in the first place!

Technical Specs

Temperature Rating 0-30 degrees Fahrenheit
 Weight 0 Regular: 1 lb 12.5 oz
15 Regular: 1 lb 7.5 oz (23.5 oz)
30 Regular: 1 lb 4 oz (20 oz)0 Long: 2 lb
15 Long: 1 lb 10 oz
30 Long: 1 lb 6 oz (22 oz)
 Shell 10 Denier (0.7 oz/yd²) Ripstop Nylon w/ VitalDry™ DWR
 Lining 10 Denier (0.7 oz/yd²) Ripstop Nylon
 Insulation Type Down
 Fill 800-Fill Power StormLoft™ Water Repellent Down
 Fill Weight 0 Regular: 17.6 oz / 500 g
15 Regular: 14 oz / 400 g
30 Regular:  10 oz / 280 g0 Long: 18.7 oz / 530 g
15 Long: 15 oz / 435 g
30 Long: 11 oz / 310 g
 Quilt Shape Contoured
 Fits Up To Regular: 6′
Long: 6′ 6″
 Shoulder Width  Regular: 44 inches
Long: 44 inches
 Stuff Sack Size 12 x 7 in
 Gender Temperature Tested For Men
 Warranty Outdoor Vitals Lifetime Warranty