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Mountain Warehouse Cannonball Kid 3-in-1 Waterproof Jacket, Cobalt, 5-6y

£39.99 (as of 20/10/2026 03:55 BST - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

The Mountain Warehouse Cannonball Kid is a Cobalt 3-in-1 waterproof jacket for ages 5-6y, with an outer waterproof shell, an inner lightweight jacket and both layers worn together. It includes taped seams, a detachable hood, tricot lining, zipped pockets and a stated 2,000 mm waterproof rating.

SKU: B0CD3126BZ Category:

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Quick Summary

The Mountain Warehouse Cannonball Kid is a 3-in-1 waterproof jacket in Cobalt for ages 5-6y. It is designed to be worn three ways, with an outer waterproof shell, an inner lightweight jacket, or both together for added warmth.

Useful details include taped seams, a detachable hood, tricot lining, zipped pockets and a stated 2,000 mm waterproof rating. The jacket also includes a 2-year warranty.

Key Details

DetailVerified information and buyer relevance
BrandMountain Warehouse, which helps identify the exact product family.
Product type3-in-1 waterproof jacket, allowing the outer shell and inner jacket to be used separately or together.
ColourCobalt (01), so the chosen colour variant can be checked before purchase.
Age size5-6y, so sizing should be checked against the wearer’s needs.
Waterproof rating2,000 mm waterproof rating, which is a useful figure to compare against the level of wet-weather protection needed.
SeamsTaped seams, helping to identify a more weather-ready seam construction.
HoodDetachable hood, so the hood can be removed when preferred.
LiningTricot lining, giving a soft inner finish.
PocketsZipped pockets for secured storage.
Warranty2-year warranty.

What to Compare Before Buying

  • Size: The listed size is 5-6y, so check it against the child’s current measurements and the fit you want.
  • Weather protection: The jacket has a 2,000 mm waterproof rating and taped seams, so compare that with the conditions you expect to face.
  • Wear options: It can be worn as the outer shell, the inner jacket, or both together, so think about how often you want to use each layer.
  • Features: The detachable hood and zipped pockets are useful if those details matter to the wearer.

Who This Product May Suit

This jacket may suit a child who needs a single coat that can be worn in different ways across changing weather. The 3-in-1 format gives flexibility, while the waterproof shell and taped seams make the jacket relevant when staying dry matters.

Before You Decide

Confirm the 5-6y size and the Cobalt (01) colour before choosing an offer. If the 3-in-1 format matters, check whether you want the outer shell, the inner jacket, or both together for use. Review the 2,000 mm waterproof rating against the wet-weather protection you want.

Brand

Mountain Warehouse

Manufacturer

Mountain Warehouse

Binding

Unknown Binding

Product Group

Apparel

EAN

5063005514236

Part Number

023266014006

Model

023266014006

Color

Cobalt (01)

Size

5-6 Years

Number Of Items

1

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