ROCK FRONT 450 Ultralight down sleeping bag

(5 customer reviews)

407.90$

Lightweight three-season sleeping bag with a unique design that easily converts into a blanket, quilt or underquilt for a hammock.

Updated version is insulated with premium 900+ Fill Power down.

Choose the size

Size and packaging guidelines

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Specification Chair Armchair Sofas
Height 37" 42" 42"
Width 26.5" 32.5" 142"
Depth 19.5" 22.5" 24.5"
Assembly Required No No Yes
Packaging Type Box Box Box
Package Weight 55 lbs. 64 lbs. 180 lbs.
Packaging Dimensions 27" x 26" x 39" 45" x 35" x 24" 46" x 142" x 25"
Estimated delivery dates: March 24, 2026 – April 10, 2026
Description

ROCK FRONT 450 Ultralight is a mummy sleeping bag with a long central zipper. This design is the most effective in keeping warm, while the long central zipper adds functionality.

You can partially open the sleeping bag for ventilation at the top and at the feet, or unzip it completely to use it as a blanket if it gets really hot.

Loops along the zipper allow you to attach the sleeping bag to your sleeping mat like a quilt to get more internal space. The outer loops allow using the sleeping bag as an underquilt for a hammock.

Insulated with premium 900+ FP hydrophobic goose down, keeping it warm, lightweight and compact at the same time.

Options:

  • Mummy sleeping bag – for maximum heat keeping
  • Blanket – for warm nights
  • Quilt – to increase interior space (with Quilt Set Upgraded)
  • Underquilt – for sleeping in a hammock (with Underquilt Set Upgraded)
  • Double sleeping bag – two sleeping bags from Ultralight line can be zipped together

Features

  • ultra-lightweight and packable
  • insulated with 900+ Fill Power goose down
  • mesh baffles for uniform insulation and quick recovery
  • DWR impregnation of down and fabric
  • opens for ventilation and turns into a blanket
  • can be zipped with other sleeping bags of the Ultralight line
  • internal zippered pocket
  • anatomical footbox
  • wide insulated baffle along the zipper
  • wide insulated collar
  • adjustable hood

Safety:

  • OEKO-TEX Standard 100 guarantees that a garment is free from harmful chemicals
  • PFOS and PFOA chemicals free

* Total weight of the product can vary within 2%.

** We are constantly improving our products, therefore we reserve the right to change the configuration, accessories, colors and shades of fabrics.

Specifications
  • Temperature rating: (Tcomfort/Tlimit) 0°C / -6°C | 32°F / 21°F
  • Insulation: 900+ Fill Power hydrophobic goose down
  • Inner and outer material: nylon micro rip-stop 10den
  • Zipper: two way YKK #3
    • S Medium: 650g (insulation weight: 385g) / 22.93 oz (insulation weight: 13.58 oz)
    • M Short: 710g (insulation weight: 430g) / 25.04 oz (insulation weight: 15.17 oz)
    • M Medium: 745g (insulation weight: 450g) / 26.28 oz (insulation weight: 15.87 oz)
    • M Long: 780g (insulation weight: 470g) / 27.51 oz (insulation weight: 16.58 oz)
    • L Short: 800g (insulation weight: 485g) / 28.22 oz (insulation weight: 17.11 oz)
    • L Medium: 840g (insulation weight: 515g) / 29.63 oz (insulation weight: 18.17 oz)
    • L Long: 875g (insulation weight: 540g) / 30.86 oz (insulation weight: 19.05 oz)
  • Weight:Compression sack weight: 45g / 1.59 oz
Additional information
Weight 0.7 g
Dimensions 22 × 32 × 19 cm
Size

S Medium

,

M Short

,

M Medium

,

M Long

,

L Short

,

L Medium

,

L Long

Color

Anthracite

,

Lemon

Insulation

900+ Fill Power goose down

Technology

Box baffles

Temperature Rating

-5°C…-11°C

,

+3°C…-4°C

Extra Features

Blanket mode

,

Footbox ventilation

,

Inside pocket

,

Quilt mode

,

Underquilt mode

,

Zips with bags (YKK 3)

Shipping & Delivery

Shipping

Free worldwide shipping for orders from 100€ or 100$. If the order amount is less, you have the option to pay for shipping immediately.

Customs duties and VAT

These must be paid separately. You can find information about importing goods into your country here.

Delivery terms

We ship orders within 1-3 business days. Average delivery time is 8-20 days.