The Ruffwear Undercoat in Aurora Teal. Mountain Dog UK.
The Ruffwear Undercoat in Campfire Orange. Mountain Dog UK.
A lifestyle shot of a dog playing on the beach and wearing the Ruffwear Undercoat. Mountain Dog UK.
Sizing guide for the Ruffwear Undercoat when measuring your dog's girth. Mountain Dog UK.
Sizing guide for the Ruffwear Undercoat when measuring your dog's length and neck. Mountain Dog UK.

Ruffwear - Undercoat Water Jacket

Regular price £84.95 Sale price £76.45

The Undercoat Water Dog Jacket is an amphibious jacket for keeping dogs warm when going for a splash

Great for extending water adventures into colder weather or for dogs that are prone to getting cold when wet. As it is crafted with formfitting and insulating material, this jacket thrives in wet environments. The storm sleeves promote mobility in water while sealing in warmth.

Can be used with the Ruffwear Float Coat Life Jacket!

Key Features

  • Formfitting with a zippered closure and sleeves for core heat retention
  • Laminated neoprene body is flexible and provides insulation in wet environments
  • Small drain holes on belly panel allow water to exit
  • Articulated stretch StormSleeve seals in warmth and allows for natural swimming motion
  • Reflective trim for visibility in low-light conditions and light loop for attaching The Beacon


  • Body: 1mm neoprone laminated with stretch spandex fabric
  • Zipper: YKK Vislon Zipper
  • Reflective trim
  • Zipper flap: 200 denier polyester
  • StormSleeve Double-layer stretch spandex


  • Secure fasteners
  • Rinse with cold water after each use
  • Hang to dry
  • Do not bleach, iron, or dry clean


Girth Size
13 - 17 in (33 - 43 cm) XXS
17 - 22 in (43 - 56 cm) XS
22 - 27 in (56 - 69 cm) S
27 - 32 in (69 - 81 cm) M
32 - 36 in (81 - 91 cm) L
36 - 42 in (91 - 107 cm) XL