Patagonia R4 Back Zip Wetsuit

Patagonia R4 Back Zip Wetsuit 5 5 1
SKU: PAT88421
Eligible for FREE SHIPPING!

Availability: In stock


* Required Fields


Live Inventory. If you can add it to your cart, we have it.

No Hassle 30 Day Return Policy. Doesn't fit? Don't like it? Return it.

Contact us for Expert Advice. We are surf gear experts!

Family Owned Since 1980. Online since 1999.



The Patagonia R4 Back Zip Wetsuit stands out as a non-hooded 5.5mm suit. Perfect for coldwater surfers that hate wearing a hood and don't mind the cold water on their noggin or for combining with a separate hood piece for when it's just too cold and a hood is required. The torso and thighs are lined with midweight chlorine-free merino wool; hydrophobic recycled polyester micro-grid thermal lining in the arms and legs dries fast, minimizes weight and offers excellent flex. The easy-access center-back zip entry has an internal gasket to prevent water entry and maximize comfort.

With 100% seam sealing, better fitting anatomical patterning and new fabric packages that maximize the stretch capabilities, this suit is certain to impress. If you are a coldwater surfer and want confidence your wetsuit will keep you warm, the R4 Back-Zip Full Suit is a good bet to keep you warm and stoked through the longest winter surf days.


Thickness: 5.5/4.5mm

Neoprene: Patagonia Hand Selected Highest Quality Neoprene

Seams: 100% External Seam Sealing and Internal Taping on all Critical Areas

Zipper: Patagonia Back Zip Technology

Hood: None

Model Year: 2015/2016

Manufactures Part Number: 88421


Product Features

  • 5.5mm neoprene (torso/thighs) lined with midweight chlorine-free merino wool; 4.5mm (arms/legs) lined with hydrophobic micro-grid recycled polyester
  • Made with high-quality neoprene that meets our rigorous standards for strength, durability and warmth
  • Torso/thighs lined with midweight chlorine-free merino wool
  • Hydrophobic micro-grid recycled polyester thermal lining in arms and legs improves flexibility and dry time
  • 100% external seam sealing; all seams are triple glued, blindstitched and internally taped on high stress areas
  • Outer lining is durable, water-resistant recycled polyester jersey
  • 100% external seam sealing; all seams are triple glued, blindstitched and internally taped on high stress areas
  • Center-back zip entry with internal gasket to prevent water entry and maximize comfort
  • Anatomically engineered Supratex kneepads; key loop
  • For frigid water ranging from 38 - 49° F / 3 - 9° C
  • 1752 g (61.8 oz)
  • Made in Thailand.


Patagonia R4 Back Zip Wetsuit Wonderful in every wayReview by James James
I live in Northport, Michigan, and swim/bodysurf/surf/sail throughout the year. The day the wetsuit arrived (mid May) I put it on and swam in the lake, which was a cool 40 degrees (F). I was splendidly warm, and swimming around as happy as a Labrador for about an hour. The back-zip is easy to get in/out of, and I like that there is no attached hood because it extends the season that I will wear this suit. I can wear a hood when needed. The construction is as great as you would expect from Patagonia.

ALSO: The customer service at Cleanline Surf is insanely excellent. They literally sent a hand-written note saying something along the lines of, "have fun, hope you like it, let us know if you need anything at all," and the box that the wetsuit arrived in was full of Starburst candies, stickers, a free t-shirt, and some wax. These guys go above and beyond. I was really imrpessed, and I've already told several friends that they should get surfing stuff from Cleanline if it isn't available at their local shop. All in all, a wonderful experience. Have fun out there!
(Posted on 6/4/2015) 2015-06-04

Write Your Own Review

You're reviewing: Patagonia R4 Back Zip Wetsuit

How do you rate this product? *

 1 star2 stars3 stars4 stars5 stars

Size Chart

The staff at Cleanline Surf specialize in sizing Patagonia wetsuits. If you have never worn a Patagonia wetsuit before we strongly urge you to call us for expert advice on sizing. If you have worn one in the past be aware that the sizing has changed slightly and you may want to lean towards a smaller suit due to the increased flexibility. We do have a size chart available below, but please take it with a grain of salt. For the perfect fit the first time please call and speak with one of our wetsuit experts.

XS5′6″-5′8″120-140 lbs34.5-36.5″28.5-30.5″33.5-35.5″14.5″26-28″
S5′8″-5′10″135-155 lbs36.5-38.5″29-31″34-36″15″27-29″
MS5′6.5″-5′8.5″140-160 lbs38.5-40.5″30.5-32.5″35.5-37.5″15.5″27-29″
M5′9″-5′11″150-170 lbs38.5-40.5″30.5-32.5″35.5-37.5″15.5″28-30″
MT6′1″-6′3″160-180 lbs38.5-40.5″30.5-32.5″35.5-37.5″15.5″30-32″
LS5′7.5″-5′9.5″160-180 lbs40.5-42.5″32.5-34.5″37.5-39.5″16″28-30″
L5′10″-6′170-190 lbs40.5-42.5″32.5-34.5″37.5-39.5″16″30-32″
LT6′2″-6′4″180-200 lbs40.5-42.5″32.5-34.5″37.5-39.5″16″31-33″
XLS5′8.5″-5′10.5″180-200 lbs42.5-44.5″34.5-36.5″39.5-41.5″16.5″30-32″
XL5′11″-6′1″190-210 lbs42.5-44.5″34.5-36.5″39.5-41.5″16.5″31-33″
XLT6′4″-6′5″200-220 lbs42.5-44.5″34.5-36.5″39.5-41.5″16.5″32-34″
XXL6′2′-6′4″210-230 lbs42.5-46.5″36.5-38.5″41.5-43.5″17″31-33″
XXXL6′3″-6′5″230-250 lbs44.5-48.5″38.5-40.5″43.5-45.5″17.5″31-33″

Full Patagonia Wetsuit Sizing Chart


PatagonIa Ironclad guarantee

We stand behind everything we make, including our wetsuits. But wetsuits require care if they are going to perform and wear the way they were intended. Patagonia is not responsible for wetsuits that are abused or show normal wear and tear over time. Scratches and fading are inevitable, as are tears from the occasional close call with a fin.

Wetsuit Care Guideline:

  • Rinse your wetsuit with fresh water after every use.
  • After rinsing, fold in half at waist and hang dry.
  • Do not store it wet, or in direct sunlight.
  • Suit up carefully. We've selected high-stretch materials for their comfort and function. Avoid overstretching fabric and seams. Do not step on one leg to pull the other leg out.
  • If possible, change in a plastic tub or on a mat

Our wetsuit warranty does not cover upgrading your older Patagonia wetsuit to a current model. We are continuously improving our designs and materials, but that doesn't make your existing wetsuit unsatisfactory. It just means that the next one you buy will be even better than the last.


Returns are easy! We understand that in some situations returns or exchanges may be necessary. We also want you to be stoked on your purchase. If you are not 100% satisfied with your purchase you may return it for a full refund, or exchange within 30 days of receiving your order. Items must be in new condition with original tags and packaging.

Click here for our full Return Policy