Mattresses & Storage Back in Stock!

Just Landed: the 2026 SoftTop™ Pillow

10% off

Core ZipBed Bundle

Sale price £602.69 Regular price £669.65

Size Guide

*All components must be purchased together to receive 10% off. Discount is applied automatically.

Description

Our simplest and softest backpacking sleep system, with the added ease of zippers. 

This all-in-one complete bed bundle includes a Core ZipBed, a Flex™ Air Mattress with included inflation storage sack, a 3-piece modular SoftTop™ Pillow for maximum comfort, and a Dry Sack with Compression Caps to keep your bed compact and protected.

All individual product specs can be found at the bottom of this page. Select your sizes and colors from the drop-down menus before adding the bundle to your cart.

Sizing Support

25" sheets fit all mattresses, including the 20x72
30" sheet will fit the 25" mattresses if XL quilt is needed

Regular pillowcases fit the Regular bladder and topper
Large pillowcases fit the Large bladder and topper

Dry Sack fits the quilt, sheet, and pillow

10L Dry Sack for all sizes of the Core Bed -4°C down
15L Dry Sack for all sizes of the Core Bed -12°C down

  • Our Most Comfortable & Convenient Backpacking Bed

    The Core ZipBed is our most comfortable and convenient bed—built for backpackers who want the ease of zippers and maximum comfort at camp.

  • Game-Changing Comfort & Support

    The Flex™ Air Mattress is the only ultralight air mattress to feature a 4-way stretch top. In combination with the supportive diagonal baffle pattern, there's truly a "wow" moment when you lay on it.

  • SoftTop™ Pillow

    The Zenbivy SoftTop™ Pillow is the only modular backpacking pillow that provides maximum comfort at minimum weight. The 3-piece design includes a down pillow topper for softness, an ultralight inflatable bladder for support and height adjustment, and a separate pillowcase for easy washing.

  • Fully-Welded, Waterproof Storage

    The Zenbivy Dry Sacks feature fully welded seams for a long-lasting watertight seal, a high-speed mechanical valve for instant compression, and durable yet lightweight construction. In other words: it's the best dry sack on the market.

    • 10L for Core Bed 25°F
    • 15L for Core Bed 10°F

Product Specs

A table comparing the facets of 2 products
Facet
Core ZipBed
Flex™ Air Mattress
Weight
Weight

-4°C Down

  • Regular 25": 1.08 kg (2 lb 6 oz)
  • Large 25": 1.19 kg (2 lb 10 oz)
  • XL 30": 1.36 kg (3 lb)

-12°C Down

  • Regular 25": 1.42 kg (3 lb 2 oz)
  • Large 25": 1.53 kg (3 lb 6 oz)
  • XL 30": 1.76 kg (3 lb 14 oz)

Tapered

20x72: 567 g (1 lb 4 oz)

25x72: 680 g (1 lb 8 oz)

25x78: 709 g (1 lb 9 oz)

Rectangular (Coming Soon!)

25x72: 737 g (1 lb 10 oz)

25x78: 794 g (1 lb 12 oz)

R-Value
R-Value
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4.8
Limit / Comfort Rating
Limit / Comfort Rating

-4°C: -4°C (25°F) / 2°C (35°F)

-12°C: -12°C (10°F) / -7°C (20°F)

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Sheet Sizing
Sheet Sizing

Regular 25": Fits mattresses up to 26" x 78" x 4.5"+ (66 x 198 x 11+ cm)

Large 25": Fits mattresses up to 26" x 78" x 4.5"+ (66 x 198 x 11+ cm)

XL 30": Fits mattresses up to 31" x 80" x 4.5"+ (79 x 203 x 11+ cm)

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Fills
Fills

650FP Duck Down (80/20 grey duck down), no water-resistant treatment (additive-free)

Two layers of mylar foil

Fill Weight
Fill Weight

-4°C Down

  • Regular 25": quilt 395 g / hood 66 g
  • Large 25": quilt 450 g / hood 66 g
  • XL 30": quilt 520 g / hood 74.5 g

-12°C Down

  • Regular 25": quilt 641 g / hood 112.5 g
  • Large 25": quilt 751 g / hood 112.5 g
  • XL 30": quilt 860 g / hood 126.5 g
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Fabrics
Fabrics

Liner: 50D Polyester Pongee, coating-free, cire & non-cire, DWR-free, 62 gsm

Shell: 20D Nylon Taffeta, coating-free, cire & non-cire, C0 DWR (PFAS-free), 36 gsm

Top: 4-way stretch 20D Recycled Polyester knit

Bottom: 20D Recycled Polyester Tafetta

Packed Size
Packed Size
-

Tapered & Rectangular (Coming Soon!)

20x72: 16 x 8 cm (6.5" x 3")

25x72: 20 x 8 cm (8" x 3")

25x78: 20 x 9 cm (8" x 3.5")

Recommended Dry Sack Size
Recommended Dry Sack Size

All -4°C Down: 10L

All -12°C Down: 15L

Dry Sack sold separately

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Quilt Dimensions
Quilt Dimensions

Regular: 72” x 54” (183 x 137 cm)

Large: 80” x 58” (203 x 147 cm)

XL: 84” x 64” (213 x 163 cm)

*These are the cut fabric dimensions. Filled, lofted quilts may be several inches shorter in both length and width.

20x72: 51 x 183 x 8 cm (21" x 72" x 3")

25x72: 63 x 183 x 8 cm (25" x 72" x 3")

25x78: 63 x 198 x 8 cm (25" x 78" x 3")

*Tapered Flex™ Air Mattresses have a 5" taper, meaning the foot end is 5" narrower than the width.

Best Used For
Best Used For
All-around
Ultralight backpacking
Compatible With
Compatible With
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Includes
Includes

Quilt, sheet, and mesh storage sack

Mattress, waterproof inflation storage sack, and repair kit