LAVA Shorts

Size Guide

LAVA BUOYANCY SHORTS are the ultimate swim-training tool and are a must for swimmers and triathletes of all levels. LAVA Shorts lift your hips to simulate the same body position of a wetsuit. LAVA BUOYANCY Shorts, which are neoprene buoyancy shorts, assist in creating proper technique and allow you to focus on speed.

SPECS - 5 mm premium neoprene on the front and back.  Drawstring to get a snug fit.  Ends just above knee for an optimized length and leg opening.

BEGINNERS- Beginner swimmers will love the extra and immediate buoyancy that the LAVA BOUYANCY SHORTS give you the second you put them on.  You will immediately be faster in the water, and have a much-better body position from the moment you enter the water.

INTERMEDIATE - LAVA BOUYANCY SHORTS are ideal  for shorter speed and technique sets as well as cool-down.  The shorts are above the knee thereby allowing for natural flip turns.  For long swim sets, or for recovery swims, consider the LAVA PANTS which provide additional buoyancy above and beyond what the shorts provides due to the extra leg length.

ADVANCED - LAVA BOUYANCY SHORTS can be used for both speed and recovery swims. For speed sets, LAVA BOUYANCY Shorts will allow you to train at faster interval paces. For recovery sets, you will be able to focus on correct swimming form without exerting too much energy.

This training “wetsuit” offers race-level buoyancy and a natural range of motion at every training session, which over time improves technique and pacing while building muscle memory. Dynamic design makes LAVA BOUYANCY SHORTS comfortable to train in, do flip-turns, and easy to change into and out of. The waistband is low-cut in the front and rides higher in the back, allowing for natural breathing and comfortable flip turns without concern of losing your suit. LAVA BOUYANCY SHORTS are easy to put on in or out of the water, for a quick transition from warm up to work out to cool down. Made for the pool but are also ideal for open water swims.

LAVA BOUYANCY SHORTS are completely legal under the new rules set by USAT and WTC when wetsuits are legal. LAVA BOUYANCY SHORTS are a wetsuit and can only be worn in races that permit wetsuits. Always check with the race director prior to using the LAVA BOUYANCY SHORTS in competition.

WARNING - 1) these are addictive; 2) rinse well because chlorine will decrease their life; and 3) don't let them dry in the heat and inside out.


Market Leader

30-Day Return Policy


1-Year Warranty

Based in San Diego, California

XTERRA WETSUITS is the number one best-selling triathlon wetsuit company in North America, trusted by more triathletes than any other brand.
We want to make sure you have the right fit and model. Even take it for a swim. You have 30-days from the ship date for returns.

Made from limestone-based neoprene, thereby making our wetsuits 95% water impermeable (compared with 70% for petroleum-based) and more environmentally friendly.

Our wetsuits are warranted against manufacturing and material defects for one year from the date of purchase.

Headquarters are located where the sport of triathlon began. Privately owned by two locally based triathletes. Making high-performance wetsuits since 2001.
Customer Reviews
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    United States United States

    Perfect for new swimmer training

    I am a few months into 70.3 training, and man what a difference did these make. I have problems with my hips sinking, but these all but eradicated the issues. I cut about 10-13 seconds off each lap, and don’t find myself wasting so much energy trying to stay balanced. Great for training muscle memory, but definitely addictive. I 100% recommend to anyone starting out that needs a little help dialing in their form, or just want to see what effortless swimming feels like haha. I’m 6’2, 210lbs and the large fit fine for me.

    Tim D.
    United States United States

    Holy Cow - these things are FAST!

    I am an advanced swimmer/ triathlete - I finish in top 20% in open water swim races and won my age group in my most recent mile swim. I bought these shorts because the local pond (small lake really) I swim in gets too hot for a wetsuit by July and I wanted to see if these would help me be fast in training as I am still chasing the pond KOM on Strava. Wore these shorts today and am super impressed - they are almost as fast as a full wetsuit! Amazing!

    Richard S.

    Great for a beginner

    As a 75 year old male that is finally learning to swim, the lava short is a wonderful assist. I�m slowly building my endurance and hopefully will be able to do a sprint triathlon early next year.

    Kara B.

    Great training aid

    This is a great way to simulate a wetsuit swim while training in the pool, and it's much easier to focus on my stroke when I don't have to worry about my kick.

    Size Guide