ROCK FRONT 450 Ultralight down sleeping bag
400.88$
Lightweight down sleeping bag for three-season trips. Easy to use as a blanket, quilt, or hammock underquilt.
Sleeping Bags
Choose your sleeping bag size
Take measurements and select the required settings to determine the size of your sleeping bag correctly.
Select your measurements
- A - body height from the top of the head to the heels, measure without shoes.
- B - measure horizontally with your hands at the level of your chest.
- C - measure horizontally at the most protruding part of the hips.
* Data are measured in centimeters
You can also use the chart below:
| Width (circumference) / Height | Shoulder: up to 110 cm / Hip: up to 100 cm | Shoulder: 111-130 cm / Hip: up to 120 cm | Shoulder: 131-150 cm / Hip: up to 140 cm |
|---|---|---|---|
| up to 164 cm | S Medium | M Short | |
| 165-176 cm | M Medium | L Short | |
| 177-188 cm | M Long | L Medium | |
| 189-197 cm | L Long |
- If your height is on the borderline of sizes (for example 176 cm), you can choose M Medium or L Short. If your height is 177 cm and above, choose between M Long and L Medium.
- If your width parameters are close to the limit (1-4 cm) and you need additional internal space, choose a wider size.
Three-season warmth, wider range
Down sleeping bag in 10D nylon micro ripstop with center-zip convertible mummy bag design.Filled with 450g of 900+ FP hydrophobic goose down and built with mesh box baffles for strong warmth, low weight, and more flexibility across changing conditions.
0°C / -6°C
650-875g
900+ FP
YKK #3 detachable two-way
7 sizes
22 × 20 x 20 cm
Adjustable hood
Warm hood with simple adjustment for a closer fit and better protection in cold weather.
Wide insulated collar
Helps seal in warmth around neck and upper chest and reduces heat loss during sleep.
Center zip
Long two-way center zip makes it easy to vent heat, open bag as a blanket, or connect it to another compatible sleeping bag.
Read more
Insulated draft tube
Wide insulated draft tube along zipper helps reduce drafts and improve warmth retention.
Read moreAnatomical footbox
Shaped footbox gives feet more natural space and helps maintain warmth more efficiently.
Anti-snag zip guard
Helps zipper run smoother and keeps lightweight fabric from catching during use.
Read moreUnderquilt-compatible design
Reinforced loops let you set it up as a hammock underquilt when needed.
Read moreInternal zip pocket
Keeps small essentials close through the night.
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ROCK FRONT 450 Ultralight is built for three-season trips, cold off-season use, and lightweight backpacking. Center-zip convertible mummy bag concept gives it more versatility than a standard mummy sleeping bag, making it easy to use as a warm sleeping bag, a blanket, a quilt, or a hammock underquilt.
Anatomical mummy shape helps retain warmth, while long center zip makes temperature control easier. You can vent heat from top or foot end by opening zipper partway. In warmer conditions, bag can be opened fully and used as a blanket.
Loops along zipper let you attach bag to sleeping mat in quilt mode when you want more room inside while still keeping better draft control. Outer reinforced loops also allow this bag to be used as a hammock underquilt.
Insulated with premium 900+ FP hydrophobic goose down, keeping it warm, lightweight and compact at the same time.
Use case
- as a mummy sleeping bag for maximum warmth
- as a blanket for warmer nights
- as a quilt with Quilt Set Upgraded
- as an underquilt for hammock camping with Underquilt Set Upgraded
- zipped together with another compatible sleeping bag from Ultralight line
Set includes
- sleeping bag
- compression sack
- mesh storage sack
* Total weight can vary by up to 2%.
** We continuously improve our products and reserve right to change configuration, accessories, colors, and fabric shades.
- ultralight and packable
- insulated with 900+ fill power hydrophobic goose down
- mesh box baffles for even insulation and quick loft recovery
- DWR-treated down and shell fabric
- underquilt-compatible design
- compatible with other sleeping bags from Ultralight line
- anti-snag zipper guard for smoother, easier zip use
- internal zip pocket
- anatomical footbox
- wide insulated draft tube along zipper
- wide insulated collar
- adjustable hood
- long center zip for easy ventilation and blanket-style use
Temperature rating (Tcomfort / Tlimit): 0°C / -6°C | 32°F / 21°F
Insulation: 900+ fill power hydrophobic goose down
Shell / lining: 10D Nylon Micro Ripstop DWR
Zipper: YKK #3 detachable two-way zipper
Weight
- S Medium: 650 g (insulation: 385 g) / 22.93 oz (insulation: 13.58 oz)
- M Short: 710 g (insulation: 430 g) / 25.04 oz (insulation: 15.17 oz)
- M Medium: 745 g (insulation: 450 g) / 26.28 oz (insulation: 15.87 oz)
- M Long: 780 g (insulation: 470 g) / 27.51 oz (insulation: 16.58 oz)
- L Short: 800 g (insulation: 485 g) / 28.22 oz (insulation: 17.11 oz)
- L Medium: 840 g (insulation: 515 g) / 29.63 oz (insulation: 18.17 oz)
- L Long: 875 g (insulation: 540 g) / 30.86 oz (insulation: 19.05 oz)
Compression sack: 45 g / 1.59 oz
Packed size: 22 x 20 x 20 cm / 8.7 x 7.9 x 7.9 in
Manufacturer: ROCK FRONT, Ukraine
Composition
100% nylon shell & lining / goose down insulation
Safety
PFAS-free / OEKO-TEX® Standard 100 / PFC-free DWR
Care note
Dry fully after every trip. Store loose, dry, and uncompressed — in a mesh storage bag or fully lofted. Do not store long-term in a compression sack. Learn more
Wash at 30°C
Do not bleach
Tumble dry low
Do not iron
Do not dry clean
Maksym –
I have not had an opportunity to test the sleeping bag yet but the thoughtfulness of the design and construction quality breeds confidence. I am extremely pleased with the shipping speed. It took only a week to deliver it to the UK from Ukraine.
Maksym –
I have tested this sleeping bag trekking down the Jordan Trail in dessert conditions of Wadi Rum for two weeks. Provides very comfortable sleep up to 0 degrees. At -2 I slept OK but had to put a fleece over base layer and tighten the hood so that very little of my face was exposed. It dries quick and weighs very little.
Store manager ROCK FRONT –
Thanks for your review!
Valerii –
Overall, the sleeping bag is not bad, but this zipper is not suitable for use in sleeping bags in general. It fastens well, but bites fabric when you unzip it. You can unzip the zipper from the sleeping bag only with two hands, and you still need to find the zipper lock, in the upper position it is located together with the collar drawstrings. If you sleep in a jacket and there is little space in the sleeping bag, it will be quite problematic to unzip it, and if the zipper gets stuck on top, you will have to suffer until you open the sleeping bag. If the manufacturer wanted to get the minimum weight, they could have made a normal zipper, for example, 2/3 of the way up, and if you need a blanket, you can buy a quilt.
Update: review of the previous version
Store manager ROCK FRONT –
Thank you for your review.
Yes, sometimes zipper getting stuck when you opening the sleeping bag. This is mainly due to the automatic zipper, which prevents unauthorized opening and blocks the reverse. This problem is especially noticeable during the first use, but later you begin to understand how this zipper works and it stops biting the fabric.
We are working on solving this problem and we are confident that the next iteration of Ultralight sleeping bags will retain all their features and become more convenient to use.
Olexandr –
Some are just wonderful! Perfect seams, no threads sticking out anywhere! Very high level of sewing. I would like a greater variety of colors, perhaps some other design solutions.
Ihor –
Good day to you all! I’ve had a lot of sleeping bags, but this one is my favorite so far. pleasant to the touch, light and compact (which sometimes makes a big difference), warm – it keeps the temperature optimally and stays dry when the humidity is high! is it really made in Ukraine? it’s great! thanks!