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4.6
Rated 4.6 out of 5 stars
99 Reviews

Undercoat™ Dog Water Jacket

water-friendly insulation

Color

Selected: Aurora Teal

Choose size

Sizing Chart

Measurement is around the widest part of the rib cage. This style is Formfitting, meaning that it is snug and conforms to the body’s contours. In between sizes? Choose the larger size.

Product sizing chart table
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
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Better With Each Design

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Trail Tested Promise
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When it comes to exploring in and around water, the Undercoat™ Water Jacket offers warmth for dogs who can't resist making a splash in the colder, shoulder seasons or who are prone to getting cold when wet. It's an amphibious jacket that thrives in wet environments, using a formfitting laminated neoprene for insulation that stretches and moves with dogs as they romp and swim. Super-soft, articulated stretch StormSleeves™ are engineered to seal in warmth while maintaining freedom of movement.

Can be worn standalone as an insulative piece, or layered under the Float Coat™ Life Jacket if buoyancy is also needed.

WATER-FRIENDLY WARMTH

Laminated neoprene body is flexible and provides insulation in wet environments.

STRETCH SLEEVES

Articulated stretch StormSleeve™ seals in warmth and allows for natural swimming motion.

DRAINAGE HOLES

Small drain holes on belly panel allow water to exit.

Additional 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™️

  • Materials

    • Body: 1mm neoprene laminated with stretch spandex fabric
    • Zipper: YKK Vislon Zipper
    • Reflective trim
    • Zipper flap: 200 denier polyester
    • StormSleeve™: Double-layer stretch spandex
    • Made in Vietnam

  • Care

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

Undercoat™ Videos

  • About: The Undercoat™ Water Jacket

    Learn more about the Undercoat™ Water Jacket from Alli and Firnspiegel.

Find The Right Size For Your Dog

Measurement is around the widest part of the rib cage.

Sizing Chart & Technical Specs

Measurement is around the widest part of the rib cage. In between sizes? Choose the larger size.

FIT GUIDE

While each style of Ruffwear apparel is designed for its intended use, this guide generalizes our fits in three ways. The Undercoat is Formfitting with a zippered closure and sleeves for core heat retention

Fit guide table
Formfitting Regular Fit Relaxed Fit
Snug and conforms to the body’s contours. Can be worn standalone or layered under Relaxed apparel. Tailored with a bit of wiggle room. Can be worn standalone or layered under Relaxed apparel. A loose fit that drapes the body. Can be worn standalone or over Regular or Formfitting apparel. Works well for hard-to-fit dog shapes and sizes.
Product sizing chart table
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
Product Dimensions Figure
Product dimensions table
Length (A) Neck (B) Size
11 in (27.5 cm) 10.5 - 11.75 in (26.5 - 30 cm) XXS
14 in (35.5 cm) 13 - 15 in (33 - 38 cm) XS
18.5 in (47 cm) 15 - 17.5 in (38 - 44.5 cm) S
20.75 in (53 cm) 18 - 20.75 in (45.5 - 52.5 cm) M
22.75 in (58 cm) 22 - 24.5 in (56 - 62 cm) L
26 in (66 cm) 26 - 28.5 in (66 - 72.5 cm) XL
Find The Right Size For Your Dog chart
Select Size

17-22 in (43-56 cm)

Ratings & Reviews

4.6
Rated 4.6 out of 5 stars
Based on 99 reviews
Total 5 star reviews: 70 Total 4 star reviews: 21 Total 3 star reviews: 7 Total 2 star reviews: 1 Total 1 star reviews: 0
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99 reviews
  • Crystal H.
    Verified Buyer
    Reviewing
    Undercoat™ Dog Water Jacket Small / Campfire Orange (815)
    I recommend this product
    Rated 5 out of 5 stars
    3 days ago
    The Ruffwear Undercoat Dog Water Jacket is pure genius.

    It’s sleek enough to double as my raincoat and to wear under my water Confluence life jacket—so whether I’m wading through streams or strutting through puddles, I stay warm, dry, and fabulous. The fit hugs my noodle body without feeling bulky, which is critical because, let’s be honest, I have zero insulation of my own. It’s flexible enough for full zoomie range, and it layers perfectly under my Confluence Life Jacket when I’m really going for the aquatic fashion award. Rainy days used to be tragic. Now they’re my runway.

    Signed with soggy pawprints, Naia Moon the Whippet— unofficial puddle princess, and the most spoiled (and stylish) pup on the block. I am 28 lbs with a long skinny body and wear a size small. It fits pawfect!

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  • Kelly B.
    Verified Buyer
    Reviewing
    Undercoat™ Dog Water Jacket Small / Campfire Orange (815)
    I recommend this product
    Rated 5 out of 5 stars
    4 weeks ago
    Love Love Love!

    I love the design, it fits very well. We have yet to test it in the water but as soon as the lakes unfreeze we are going to test it out!

    (Float Coat with Undercoat)

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  • John I.
    Verified Buyer
    Reviewing
    Undercoat™ Dog Water Jacket Medium / Campfire Orange (815)
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    GIA 'S REVIEW

    SHE LET ME PUT IT ON HER WITH NO PROBLEMS, I TOOK HER OUTSIDE AND SHE RAN AOUND WITH IT ON AND DIDN'T MISS A BEAT. WEATHER HERE IS TO COLD FOR HUNTING . I HOPE I'LL BE ABLE TO FEILD TESTED IN THE NEXT WEEK OR TWO. MY SON IN DENVER HAS ONE FOR HIS DOG AND WORKS GREAT. I'M SURE IT WILL BE THE SAME GIA.

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  • Susanna
    Verified Buyer
    Reviewing
    Undercoat™ Dog Water Jacket Medium / Aurora Teal (421)
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Perfect for cold water

    My lab will NOT stay out of the water in the winter, so I’m grateful to have found this jacket. It fits snugly but not tightly, and her fur stays almost completely dry. She has no problem swimming in deep water—no drag or movement restriction. The snap helps make zipping easy with no snags.

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  • Christopher T.
    Verified Buyer
    Reviewing
    Undercoat™ Dog Water Jacket XSmall / Campfire Orange (815)
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Snug and stylish

    Size XS Fits my 23 lb 22 in chest dog like a wetsuit would on a human. Super fun and cute, wears neatly under the life jacket

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