100% NO-RISK MONEY BACK GUARANTEE
Love your design or get your money back
Current Lead Time: 6-8 Weeks As easy as buy, get pro design and receive your gear.Get inspired by past designs and fits from fellow athletes.
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A little longer to cover you- Difference between front and back lenght
- Side cut to improve your moves
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The most comfortable item in any runner’s closet.
Our Thunder Singlet is designed for optimal performance anywhere from the track to that marathon you’ve been training for. You will barely think about it; light, breathable, and ready for that finish line.
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Slim Fit.
UV Protection.
Fabrics: High elastic and quick drying fabric. -
Do not iron.
Do not dry clean.
Do not tumble dry.
Machine wash in cold water with like colors.
Do not use bleach, fabric softeners or dryer sheets.
Do not use in swimming pools or environments with chlorine and other chemicals. -
Comfort-CenteredHigh elastic fabric with a soft feel against your skin.Stay DryAbsorbs moisture and offers maximum breathability.ProtectionStay protected from UV during your training and racing.
A little longer to cover you
JOIN 4820+ HAPPY CUSTOMERS
Amazing Customer Service
"Innerforce's team exceeded expectations with their lightning-fast responsiveness and delivery. They provided awesome designs within a day and delivered the suit a week early. It looks and feels fantastic, with no issues after washing. Thanks, Innerforce!💪🏻"
Justin P.
Verified Buyer
Best Products Out There
"My 3rd Innerforce tri suit confirms their unbeatable comfort, quality, and customer service. Perfect fit, zero chafing issues, and impressively quick-drying. Worth every penny for peak performance!"
Ray P.
Verified Buyer
Best Tri Kit I Have Worn
"Comfortable, Durable, Premium Quality, Affordable. And I appreciate Yani who worked hard for me to come up with the perfect design for my kit. Looking forward to my next Innerforce Kit!"
Scott S.
Verified Buyer
Like Wearing Nothing
"High quality material does not chafe. Feels similar to wearing NOTHING. Breathable, quick drying, aerodynamic. Easy to remove top for quick bathroom breaks. Highly recommended for long course one piece."
Cheryl P.
Verified Buyer
Best Tri Suit On The Market
"My second Innerforce tri suit reaffirms their unbeatable quality. Perfectly snug for aerodynamics, with attention to details like mesh fabric and anti-slip strips. Stylish and customizable, it's simply the best!"
Noah K.
Verified Buyer
Stellar Quality & Perfect Fit
"I'm beyond impressed with the exceptional quality and fit of my latest purchase from Innerforce. The materials feel durable, and the fit is spot-on, providing both comfort and style. This brand truly stands out in the market!"
Robert H.
Verified Buyer
Pro Look & Feel
"My second Innerforce tri suit outshines the first! Sporting a pro look, it's perfect for race day. Great fit and mobility, especially for swimming in my arms and shoulders. Design one yourself—you won't regret it!"
Ari G.
Verified Buyer
Best Suit I Have
"This suit fits amazing and is extremely comfortable. No chafing at all and no pinching around the thighs or upper arms. I am a huge fan of Innerforce Tri suits and this is the best one yet."
Chip G.
Verified Buyer
I Am a Fan
"Did not know the brand, I'm thrilled I took the chance. Their fast design process transformed my ideas into a dream race kit with exceptional quality. No other company has provided such outstanding service!"
Laura T.
Verified Buyer
COMPLETE THE LOOK
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Men Size Guide
| HEIGHT (ft) | CHEST (in) | WAIST (in) | HIPS (in) | |
|---|---|---|---|---|
| XS | 4'11-5'3 | 32-35 | 26-28 | 32-35 |
| S | 5'3-5'7 | 35-37 | 28-31 | 35-37 |
| M | 5'7-5'10 | 37-40 | 31-33 | 37-39 |
| L | 5'10-6'1 | 40-43 | 33-35 | 39-42 |
| XL | 6'1-6'3 | 43-45 | 35-38 | 42-44 |
| 2XL | 6'3-6'6 | 45-47 | 38-40 | 44-46 |
| 3XL | 6'3-6'6 | 47-49 | 40-43 | 46-49 |
For more accurate results, make sure to use close-fitting apparel. Make sure to use a flexible tape measure and, if possible, ask someone to help you with your measurements.
HEIGHT
- Make sure your heels, head, shoulders, and buttocks touch the wall, and your eyes are looking straight ahead.
- Lightly mark the wall with a pencil where the wall meets your head and measure the distance from the floor to that mark.
CHEST
- Place the end of the tape at the fullest part of your bust.
- Wrap it around your under armpits and back to front.
WAIST
- Circle your waist at your natural waistline located above your belly button and below your rib cage.
HIPS
- Start at one hip. Make sure the tape is over the largest part of your buttocks.
- Wrap the tape measure around and go back to where you started.
