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Colby + Yamamoto - 4/3mm Hooded Chest Zip Fullsuit

Colby + Yamamoto - 4/3mm Hooded Chest Zip Fullsuit

Regular price $325.00 USD
Regular price Sale price $325.00 USD
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The Colby + Yamamoto 4/3mm Hooded Chest Zip Fullsuit is designed for cold conditions, typically used in water temps in the low to high 50s.  

Like all Colby + wetsuits, it features Yamamoto #39 in the torso for durability, shape retention and warmth, and Yamamoto #40 in the shoulders and arms for added flexibility and freedom to reduce paddling fatigue.  We use a custom-made jersey from the world's premiere jersey provider which has a silky hand feel with amazing stretch and resilience.

The Colby + Yamamoto 4/3mm Hooded Chest Zip Fullsuit features triple-glued and blindstitched (GBS) seams with internal taping in critical areas (those that take the most abuse).  GBS stitching combined with internal tape will improve the longevity of the suit and also helps reduce leakage from sew-through.  It doesn't completely alleviate it, but certainly helps. 

To help alleviate leakage, and importantly, we've applied a rubberized liquid seal treatment to the exterior seams, which ends just below the armpits.  This will dramatically reduce leakage in the lower body, crotch and torso.  And because we've left it off of the arms and shoulders, you'll have unmatched freedom and flexibility in the upper body.  

The chest zip design is a tried-and-true standard and features an all-metal YKK zipper pull which will outlast the life of the neoprene.  It's tough as nails, but not too bulky or heavy.  

The hood and chest panel have adjustable cinch cords to ensure a snug fit and minimize water entering the hood and chest area.  

The dark grey upper body jersey turns nearly black when wet and also indicates where the Yamamoto #40 is used.  


Yamamoto Neoprene Soft and flexible feel. Fantastic warmth and lightweight as well. More expensive per yard and if not taken care of, will degrade like other neoprene (no faster, but not impervious to mishandling)
Jersey Our proprietary jersey lining is the most comfortable and flexible we've ever felt (and surfed in) Not as bullet proof as cheaper jerseys
Liquid sealed seams Reduces the inflow of water through seams and pinholes from sewing needles Reduces flexibility and can delaminate if left in the sun to bake
Extra durable knee pads Won’t delaminate or fail as easily for guys that drag a knee when popping up or push under waves using their knee on the tail Slightly less flexible
Watertight zip Reduces leakage through zipper teeth Water will still get in the wetsuit (slowly), but this is how it’s meant to work. The other tradeoff is it’s a bit more expensive than the non-water-tight zips
Triple glued + blindstitched construction No buildup around seams to give you a rash. More mobility in your upper body More expensive and hand-constructed, so if there’s human error (missing a spot of glue for example), it can sometimes be felt in the form of water seepage/leaking or even failed seams (warranty will cover for 1 year)
Internal neoprene taped seams Adds strength to the seams and helps prevent additional water seepage/leaking More expensive to produce. Can limit flexibility (though not as much as liquid seal treatment), and sometimes will delaminate if not taken care of (left in the sun) or wasn’t properly glued at the factory (warranty will cover)

Shipping & Returns


We want you to love our products. On this page you will find details about how to return or exchange your purchases made online.


If you wish to return or exchange a product you've purchased from us, for any reason, we will refund the purchase price or exchange those products subject to the following conditions:

  1. Items must be returned within 30 days of purchase with the original receipt or other proof of purchase
  2. The returned items must not be used [Not surfed in], has any sand or residue, or damaged in any way.
  3. If you request a refund, the purchase price (excluding delivery charges for online) will be refunded to you using the original payment method once we have received the returned item back and confirmed that it meets conditions 1 and 2 above.  If a product is returned used or damaged, the product will be sent back to the return address.

We pay for return shipping (to us), as well as shipping all exchanges back to you:)


Please contact us via email or phone:

(805) 702-1818

From there we will send you a prepaid return label via the email we have on the order. When sending the return back, please make sure the suit is rolled up loosely and not awkwardly folded or creased in any way (leaves permanent damage).

Please also do us a favor, and include your name, order number and "return for refund OR exchange for [fill in the size you’d like]" on a note w/in the package - that'll speed things up!

Warranty and Repair

Wetsuit Warranty and Repair Policy

At Colby +, we stand behind the quality of our wetsuits and are committed to providing our customers with the best possible service. As such, we offer a warranty and repair policy for our wetsuits, as outlined below.

Please note:  Warranty does not apply to Clearance Items.

Warranty Policy:

All Colby + wetsuits are covered by a limited warranty against defects in materials and workmanship for a period of 1-year from the date of purchase. This warranty is only applicable to the original purchaser and is non-transferable.

If a defect in materials or workmanship is found within the warranty period, we will repair or replace the wetsuit free of charge. The decision to repair or replace the wetsuit will be at the sole discretion of Colby +. This warranty does not cover normal wear and tear, damage caused by misuse, abuse, or neglect, or damage caused by accidents or environmental factors.

To make a warranty claim, the customer must provide proof of purchase and contact our customer service team ( The customer will be responsible for the cost of shipping the wetsuit to our repair facility. If the warranty claim is approved, we will cover the cost of returning the repaired or replaced wetsuit to the customer.

Repair Policy:

If a customer's Colby + wetsuit is damaged outside of the warranty period or if the damage is not covered by the warranty, we offer a repair service. Our repair team will assess the damage and provide the customer with a quote for the cost of the repair.

The customer will be responsible for the cost of shipping the wetsuit to our repair facility and the cost of the repair. Once the repair is complete, we will cover the cost of returning the wetsuit to the customer.

Please note that not all damage is repairable, and our repair team will make the final decision on whether a repair is possible.

Where Do I Send My Wetsuit?

Please send your suit to:

Colby +
130 Los Aguajes Ave
Santa Barbara, CA 93101
Attn. repairs

What Happens After I Send My Suit In?

If our repair team finds the repairs are under warranty, we’ll quickly repair or replace the suit and send it back ASAP.

For non-warranty repairs, our repair team will assess and reach back out with an update and price quote if necessary.  Once approved, the repair will be completed and the suit returned ASAP.  

Further Questions?

To make a warranty claim or inquire about our repair service, please contact our customer service team at [insert contact information].

We appreciate your business and look forward to providing you with the best possible service.
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Customer Reviews

Based on 26 reviews
Brian Congdon
5 star

Super comfortable, the belly area you wouldn’t even know your Wearing a wetsuit.

So far So Good.

Took the suit out for my first session. Very warm and flexible, as warm as my 5mm but so much more flexible and tons lighter. Little rubbing on one side, but I think my sleeve was slightly twisted, or I’m an in-between size. I’ll put it through the test as the year goes on.

Conditions: Air Temp 50f, Water Temp 57f, winds 11kts. No chills what so ever.

Brenson Sekas

Told my brother earlier this evening this is the warmest, most flexible, and butteryiest suit I’ve owned.
I’ve wanted to get this suit for awhile, very stoked I did.

Benito Olamendi
Very happy with my purchase

4/3with the yamamoto and built in hood has made my dawn patrol sessions much more comfortable. this suit was a little bit more expensive than the suits I normally buy but the materials, comfort and warmth is far better. totally worth it.

Ray Nickel
Great value

Fits very well, is well constructed and keeps me really warm. What else can I say?