APEX Evolution Trunk by Kelly Slater

Regular Price $168
Inseam /
Color / Olive Night
Size /
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Men's Bottoms

Fit
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IN CM
Size
WaistHip
28XS
30-31"35-36"
2931-32"36-37"
30S32-33"37-38"
3133-34"38-39"
32M
34-35"39-40"
3335-36"40-41"
34L
36-37"41-42"
3537-38"
42-43"
36XL38-40"43-45"
3840-42"45-47"
40XXL42-44"47-49"
4244-46"49-51"
44XXXL46-48"51-53"
4648-50"53-55"
Size
WaistHip
28XS
76-7989-91
2979-8191-94
30S
81-8494-97
3184-8697-99
32M
86-8999-102
3389-91102-104
34L91-94104-107
3594-97107-109
36XL97-102109-114
38102-107114-119
40XXL107-112119-124
42112-117124-130
44XXXL117-122130-135
46122-127135-140

Hit up customercare@outerknown.com with any questions.

Three years in the making, this is the second generation of Kelly’s APEX Trunk. We took the most high-performance trunk ever made — and made it even better.

We delivered on Kelly’s precise design requests: better no-slip braided drawcords, an enhanced waistband that cinches without bunching, and reinforced ultrasonic-welded seams where it matters most.

We teamed up with our friends at Bureo for their matchless NetPlus® material made from recycled fishing nets. This yielded a truly responsibly made trunk with a little more substance than the first APEX—without compromising any performance qualities.
Part of Kelly Slater’s Signature Collection, this style features the iconic OK KS Portal logo in Ocean Blue at the back pocket and Ocean Blue OK Dot and Wordmark branding detail.

Crafted from 90% NetPlus® Recycled Nylon, 10% Spandex.

Performance-centered design details throughout:
  • Pitched forward side seams with vents for easier fit on the board.
  • Unique arc and tangent shaped back pocket featuring a key loop and eleven laser cut drainage holes, one for each of Kelly's world titles.
  • Engineered side seam taping.
  • Soft touch interior waistband.
  • Gusseted fly.
  • Soft touch triangles at inner thigh touch points.
  • Unique rubberized drawstring.

Looks Great With

APEX Evolution Hooded Rashguard

Compare Price
Regular Price
$128
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APEX Evolution Trunk by Kelly Slater

APEX Evolution Trunk by Kelly Slater

Regular Price $168

Overall rating: 4.6666665 / 5 from 117 reviews.

AI Generated Review Summary

The APEX Evolution Trunk by Kelly Slater offers a perfect fit, praised for its enhanced waistband and no-slip drawcords. Customers appreciate its durable, soft, and stretchy material made from recycled fishing nets. The unique design features, including side seams with vents and a back pocket with drainage holes, contribute to its comfort and performance on the board.

Summary topics

  • Product Fit (34%): Many customers expressed appreciation for the perfect fit of the product, with multiple reviews mentioning it.
  • Material Quality (15%): Many customers expressed satisfaction with the material, praising its softness, stretchiness, and durability.
  • Product Length (6%): Customers appreciated the perfect length of the product, which was mentioned multiple times in the reviews.

Review topics: ["size","fit","length","shorts","color","fabric","material","trunks","design","pockets","quality","pair","look","feel","stretch","rash","pattern","cut","customer service","drying","seams","durability","waistband","version","price","policy","boardies","improvements","update"].

Review highlights

  • "I like the new length and material great to surf in and run, good all round board shorts will get more."Damian M.
  • "Perfect fit, right length, dry fast and look great!!"Russell P.
  • "I love the look and fit."Daniel P.

Reviews

Seam failure issue

"They feel fantastic and love them. Unfortunately I’ve had 2 pairs. First pair seem separated in under 1 month. They were great, sent pictures in and they replaced with gift card. Bought a 2nd pair with new design and unfortunately butt seem separated in 3 weeks. Can’t ware those. Very sad because they are amazing, very hesitant to try again."

Darren (2/5)

Hands down best surf trunks

"Hands down best surf trunks I’ve ever had. I like them way more than the 1st gen apex, the fit is even better and the material feels like it’s going to last. Also knowing that my money is going towards cleaning up and recycling fish nets, I’ll pay the extra for that alone; but the fact that they are also performance wise the best I’ve ever had, these are no brainer."

juan U. (5/5)

Poor Quality

"The glue that holds the zipper to the short seperated after a few surfs. The OK team sent a replacement and after a few surfs the same malfunction. Liked the quick try and very comfortable but these quality issues are unacceptable for a short that cost double a normal surf trunk. Very disappointing there QA is shipping defective shorts out."

Bryan P. (1/5)

This is already my fifth

"This is already my fifth pair of your boardshorts, and I’m still as impressed as ever. With every new version, you add small details that improve the quality, comfort, and performance. Great job on continuously making an already excellent product even better!"

MARC M. (5/5)

These are great. Not too

"These are great. Not too long, not too short. Material is tough with a little stretch. Fits well per the size guide."

NICHOLAS C. (5/5)

"You sent my order to the wrong address and dont have clue why you sent it to Granbary Texas , 3 hours from where I live. It cost me $70 to ship it to me . Please refund me my shipping cost of $70 file:///var/mobile/Library/SMS/Attachments/eb/11/32608E00-AB8A-4BE1-859D-B8F9AF39BC2F/IMG_0138.jpeg Bobby Moses"

Robert (1/5)

I have owned a number

"I have owned a number of versions of these OK trunks. Early ones had trouble with seam welds (OK did great on replacements). This pair is the best performing yet! Surfed in them for 2 weeks in Indo. Zero rash, quick drying, flexible and of course fashionable."

Philip J. (5/5)

Zipper complex on rear pocket

"Zipper complex on rear pocket came unglued after2 wearings. This is insane for a boardshort with a $170 price point"

Lars M. (5/5)

Summer trunks

"Some of my favorite swim trunks and on my 2nd summer of light use but the seam glue is starting to delaminate and the skinny material is coming off from the main material."

Jake B. (3/5)

These board shorts are comfortable

"These board shorts are comfortable and exceptionally made."

Toby P. (5/5)

Q&A