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Blueseventy Core Short - Men's


Item # BLS000F

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  • Black, S ($109.95)
  • Black, M ($109.95)
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Item # BLS000F

A few more laps of comfort.

When you want some of the buoyancy of a full wetsuit and the efficiency advantages they provide, without spending the money or the time on one, the Blue Seventy Core Shorts are calling your name.

Built of the same premium materials as the top-shelf Helix shorts, the Core shorts are ready to return greater distance on each stroke, excellent comfort, and natural movement. Aerodome rubber up front is both buoyant and hydrodynamic, while the Yamamoto rear and sides are thinner to allow greater flexibility and rotational range. The jersey interior liner is soft, and the SCS coating keeps the shorts hydrophobic while boosting durability. The drawstring waistband ensures a proper fit up front, and out back, the shorts sit higher than normal to prevent unwanted water entry on dives and push-offs.

The Blue Seventy Core Shorts come in five unisex sizes, from X-Small to X-Large, and in the color Black.

  • Aerodome neoprene front panels
  • Yamamoto neoprene sides and rear
  • Jersey interior lining
  • SCS coating
  • Drawstring waistband

Tech Specs

[front panels] Aerodome neoprene, [sides and rear] Yamamoto neoprene
Recommended Use:
swimming, training, triathlon
Manufacturer Warranty:
2 years

Size chart



18 20 22 242628303234
Chest 31.0in
Waist 22.0in
Height 60.0in
How to Measure:
For best results, take measurements over your underwear.
Measure under your arms, around the fullest part of your chest.
Natural Waist:
Measure around your natural waistline, keeping the tape a bit loose.

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Blueseventy Core Shorts

    I've been using these shorts for over a year and absolutely love them! I ordered size medium and they fit perfectly. I use them for every pool swim I do, about 3 times per week. I have replaced the pool buoy 100%. They give excellent flotation which allows me to kick along with focusing on swim mechanics. Best investment I've ever made for swimming.

    What size are you? Height weight waist etc?

    Blueseventy core shorts

    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Size Bought: medium

    I have used these shorts for the last two years for my triathlon swim training. Perfect on the days when you need to focus on your upper body and core rotation.

    Focus on form

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: Medium

    If you are not an experienced swimmer and struggle with the kick, you will love these. The buoyancy allows you to focus on form and speed

    Function, form and fast

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: Large

    This is my second pair of wetsuit shorts, however these are by far the best. First, the fit is perfect and just as advertised on the Blueseventy website. These shorts function just as a pull buoy or as I swim in my wetsuit. I noticed right away a major increase in speed as I did a few 100meter repeats. For a intermediate swimmer as myself the shorts really allow me to work on my form as I will be swimming during races in my wetsuit.

    Throughout my week of use the comfort is still the same. No chaffing or anything.

    I highly recommend this product to your swim arsenal.

    Throw Away The Pull Buoy

    • Familiarity: I've put it through the wringer
    • Fit: Runs small

    blueseventy's core short is so money you don't even know it. Much more buoyant then a pull buoy while allowing a natural kick and flip turning. For triathletes the perfect wetsuit simulation tool with no concerns for overheating. For swimmers an exciting new training tool to improve body position and strength. A must for swimmers.

    Wetsuit simulation

    • Familiarity: I've put it through the wringer
    • Fit: True to size

    This is a really cool product. I use them about once a week in a pool. I usually use them during pull sessions, recovery workouts when my legs are toast, and sometimes just for a fast wetsuit simulation session. I also took these shorts to Cali and swam in the warm open water. I liked the feeling of having the added buoyancy out in the open water.

    Core shorts helped my confidence

    • Familiarity: I've used it several times
    • Fit: True to size

    I am someone who really struggles with swimming, specifically with my body position...My coach is alway telling me to raise my hips. This core short works like a pull buoy but better because it allows me to kick. It has really helped me focus on my stroke and build my confidence in the water.