Mens Square Leg Swim Briefs Tight Swimsuit Athletic Bathing Suit Swimwear with Liner (SW-149)

Price: $ 14.99 ( $ 23.99 )
Status: In stock ( 2,292 ratings )

Engineered for athletes who demand speed, support and uncompromising performance, the SW-149 Square Leg Swim Briefs deliver professional-grade hydrodynamics in a versatile design. Featuring compression fit, quick-dry fabric and a supportive liner, these competition-inspired briefs are perfect for lap swimming, water polo, and triathlon training.

Returns 30-day refund/replacement
Fabric 85% Polyester, 15% Spandex
Instructions Machine Wash
Sex Men
Size XS, S, M, L, XL, 2XL

Detailed information

Please refer to the Product Introduction Article below. We will have a clearer view of the material, uses, and benefits of using the product:

Premium Features & Benefits

1. Competition-Cut Square Leg Design

  • 4.5" inseam provides optimal coverage while reducing drag

  • Sleek silhouette moves with your body for unrestricted strokes

  • Modern square leg opening (not too revealing like traditional briefs)

2. Performance Fabric Technology

  • 78% polyester/22% spandex blend offers:

    • Superior chlorine resistance (lasts 3x longer than recreational suits)

    • 4-way stretch compression for muscle support

    • UPF 50+ sun protection

  • Quick-dry - ready for next set in under 60 seconds

3. Built for Athletic Performance

✔ Internal mesh liner provides support without needing separate underwear
✔ Flatlock stitching eliminates chafing during long workouts
✔ Elastic waistband with silicone grip prevents slipping during flip turns
✔ Drag coefficient 15% lower than standard swim trunks

4. Technical Specifications

Feature Specification
Material 78% polyester / 22% spandex
Inseam 4.5 inches
Sizes 28-38 (true to competition sizing)
Liner Breathable mesh
Closure Elastic waistband with silicone grip

Who Should Wear SW-149 Swim Briefs?

✔ Competitive swimmers wanting faster lap times
✔ Masters swimmers needing durable training suits
✔ Water polo players requiring mobility and support
✔ Triathletes seeking hydrodynamic advantage
✔ Lap swimmers tired of baggy trunks slowing them down


Performance Comparison

SW-149 vs. Standard Swim Trunks

Category SW-149 Regular Trunks
Drag Low High
Dry Time <1 minute 5+ minutes
Chlorine Resistance 150+ hours 40 hours
Muscle Support Compression None

Care Instructions

  1. Rinse immediately after each use (especially in chlorine)

  2. Hand wash in cold water with mild detergent

  3. Air dry flat - never use dryer

  4. Rotate between suits to extend lifespan

Pro Tip: For competition days, reserve one suit exclusively for meets to maintain optimal compression.


Style & Color Options

  • Available in 8 colors: Black, Navy, Royal, Red, Green, Gray, White, Purple

  • Contrast side stripes for athletic styling

  • Discreet logo placement (left hip)


Sizing Guide

  1. Measure waist at narrowest point (typically at navel)

  2. Choose size based on actual measurement (sizes run true to competition fit)

  3. For competition - select snugger fit

  4. For training - may size up for comfort

Note: First-time brief wearers may need 1-2 sessions to adjust to the supportive fit.


Why Serious Swimmers Choose Square Leg Briefs

  • More hydrodynamic than jammers or trunks

  • Greater range of motion for powerful kicks

  • Stay in place during starts and turns

  • Professional look that shows you mean business in the pool

"After switching to square leg briefs, I dropped 1.2 seconds in my 100m free. The difference in feel through the water is incredible."

  • Mark T., College Swimmer


Order Today & Swim Faster

  • Individual Price: $49.99

  • Team Discounts: Available for orders of 6+ suits

  • Delivery: Ships same day if ordered by 3PM EST

Take your swimming to the next level with SW-149 performance briefs!

Mens Square Leg Swim Briefs Tight Swimsuit Athletic Bathing Suit Swimwear with Liner - 0

Mens Square Leg Swim Briefs Tight Swimsuit Athletic Bathing Suit Swimwear with Liner - 1

Mens Square Leg Swim Briefs Tight Swimsuit Athletic Bathing Suit Swimwear with Liner - 2

Mens Square Leg Swim Briefs Tight Swimsuit Athletic Bathing Suit Swimwear with Liner - 3

Mens Square Leg Swim Briefs Tight Swimsuit Athletic Bathing Suit Swimwear with Liner - 4

Mens Square Leg Swim Briefs Tight Swimsuit Athletic Bathing Suit Swimwear with Liner - 5

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2,292 ratings Write a review
Review Bob Mag
What if the shop delivers the product and I'm not satisfied with the product? Can I return for shipping?
· Helpful · 1h ago
Hello, thank you for your question. When you receive the goods, you can inspect the goods before payment. In case you don't like the product, you can always reply for shipping.
Review R. Carpenter
The shop is still recruiting collaborators, right? I want to register as a collaborator, how do I register?
· Helpful · 3h ago
We are still recruiting collaborators. If you want to register as a collaborator, you can register using the form or you can inbox the shop directly, we will guide you.
Review Rich Maynard
I received the goods, the goods are very beautiful, but the color is a little different, but I like the actual color more. I will support the shop next time.
· Helpful · 3h ago
Thank you for your comments and enthusiastic support. I'm very sorry that the color is not 100% correct, this is due to different fabric batches having slight deviations, please understand.
Review Karen
I have placed an order on the web shop to ship and help me get back to NY, I have inboxed and sent the specific address.
· Helpful · 4h ago
Hello, we will check your inbox and confirm the model you chose, please check your inbox for me.
Review Lisa Quinn
Hello shop, I placed an order from you, but I'm scheduled to go on an unexpected business trip and won't be back until 1 month later. I want to change my address to where I work, is it possible?
· Helpful · 5h ago
Hello, thank you very much for your question. Your goods have now been shipped. Is your new address in the same province? We will inbox you and give you detailed instructions.

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When it comes to hitting the beach, lounging by the pool, or diving into your favorite water sports, the right swimsuit can make all the difference. At our Sportswear Swimsuits Store, we believe that swimwear should be more than just functional—it should be a reflection of your personality, style, and confidence.