V Notch UL 40˚

Minimalist synthetic fill ultralight mummy bags

Specs + Sizing

Bag WeightREG: 1lb 8oz / 680g / LONG: 1lb 9oz / 709g
Fill WeightREG: 16oz / 454g / LONG: 17oz / 482g
Compressed Bag SizeREG: 5" x 6" / 13 x 15cm / LONG: 5.5" x 6" / 14 x 15cm
Stuff Sack SizeREG: XS 6" x 13" / XS 15 x 33cm / LONG: XS 6" x 13" / XS 15 x 33cm


Crazylight minimalist mummy bag for your fast and light adventures

Highly compressible with water resistant PrimaLoft® Hi-Loft Ultra Silver

PrimaLoft® Hi-Loft Ultra Silver insulation with stitch-free construction for maximum thermal efficiency and water resistance

Minimalist hood with drawcord

Low-profile cordlock lets you un-cinch the hood with one hand

Full-length zipper can be opened up for quilt use and provides easy temperature regulation

70" / 178cm YKK #3 locking zipper

Ergonomic footbox construction provides more loft and warmth

Two-way zipper

Zipper Garage 

Interior fabric loops for sleeping bag liners

Streamlined exterior loops for hang drying or storage

Mesh storage sack & nylon ripstop stuff sack

Construction + Materials

Nylon ripstop shell fabric with a water-repellent finish

Nylon ripstop lining fabric with a water-repellent finish

PrimaLoft® Hi-Loft Ultra Silver, 80% Recycled

Here’s what other people think.

What’s in a Name?

A v notch weir is simply a 'v notch' in a plate that is placed so that it obstructs an open channel of water, causing the water to flow over the v notch. It is used to meter flow of water in a channel, by measuring the head of water over the v notch crest.