Streamline Training 3" Shorts
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The Streamline Training 3" Shorts are made to keep you light, cool and ready to move. With a 3-inch inseam and breathable running poly fabric, these shorts are all about freedom and function during your toughest sessions. Designed with side splits for added mobility and an encased elastic waistband with drawcords for a secure feel. The invisible zip pocket gives you storage without the bulk, while the subtle front logo keeps the branding clean and athletic.
Product Details
Product Features
- True to size
- 3" Inseam
- Side splits
- Invisible zipper pocket
- Encased elasticated waistband with drawcords
- Muscle Nation logo on front leg
- 88% Polyester 12% Elastane
- Running Poly Fabric
Size Guide
Model: Samuel - 171cm, wears size M
Model Details
Samuel
HEIGHT: 171cm
TOPS: L
BOTTOMS: L
Shipping & Returns
Returns
We hope you love your new items as much as we do! However, if you're not 100% satisfied with your purchase, we have a Returns Policy in place.
You may return full-price items for an exchange (either for the same item in a different size or a new item altogether), store credit, or a refund.
Please note that any items marked as "final sale" are not eligible for store credit or a refund, as outlined in our returns policy. However, final sale items can be exchanged for the same style and colour in a different size, subject to availability. If your desired size is unavailable, we appreciate your understanding that no return or further exchange can be processed.
Undergarments, socks and opened supplements are excluded from our returns policy and cannot be returned for hygiene reasons.
Find out more about our Returns Policy.
General Shipping Rates
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New Zealand
USA, UK
Canada
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All other countries
Shipping costs and delivery timeframes may vary per country, please enter your shipping address at checkout for specific rates.
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Aero Y Back Singlet
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Regular price $35.99Regular price$59.99Sale price $35.99
Size Guide
Find your fit before you check out. Every measurement below is the garment laid flat — match it against a piece you already own, or measure your body and size to the closest range. Bodies are beautifully unique, so treat this as a guide.
Still unsure? Email orders@musclenation.org — our team will help you dial it in.
How to measure
Use a soft tape measure and keep it level. Measure over bare skin or close-fitting clothing for the truest reading.
Quick fit check
Enter your measurements to get a starting size for bottoms.
Bottoms & Leggings
Body measurements for all leggings, bike shorts, joggers and bottoms. Sizing runs XXS–XXXXL with AU equivalents.
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Inseam & Length
Inseam is the inner-leg seam length. Our Aura Straight Leg Leggings now come in three leg lengths — pick the one that matches your height.
Aura Straight Leg — inside leg by fit length
Short suits ~150–163cm, Regular ~163–175cm and Tall ~175–188cm. Inside leg is measured flat from the crotch seam to the hem.
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Aura Peachy — Rise
The Aura Peachy range comes in two rises. The High Rise waistband now sits 4cm higher than the Mid Rise for more coverage and core support.
Choose your rise
Both rises use the same buttery Aura Peachy fabric and sculpting scrunch — the only difference is how high the waistband sits.
Shorts — Inseam & Rise
Inseam length by short style. Use the bottoms chart above for waist & hip sizing.
Sports Bras
Measure around the fullest point of the bust and directly under the bust.
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Tees
Measured flat, not worn — match against a tee you already love. Oversized tees run a true super-oversized fit, so we don't recommend sizing up; size down for a less oversized look.
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How to measure
Use a soft tape measure and keep it level. Measure over bare skin or close-fitting clothing for the truest reading.
Quick fit check
Enter your measurements to get a starting size for tops & bottoms.
Bottoms
Shorts, joggers and bottoms. Body measurements, sizes S–XXXXL.
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Tops
Tees, tanks, singlets and hoodies. Body measurements, sizes S–XXXXL.
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Customers praised these training shorts as "breathable, but strong" with excellent stretch for squats and lunges. The 3" length, quality material, and deep pockets received high marks. Shoppers loved the versatile fit for gym and outdoor sports, with one noting they're "perfect for both strength and cardio." One customer mentioned sizing concerns.
- The material has the right amount of stretch for squats and lunges.
- Light, comfortable, breathable, and not restricting in movement.
- They keep you cool and dry throughout your workout.
Really comfortable shorts to train in. They’re lightweight, easy to move in and stayed in place throughout the session without constantly creeping up or needing adjustment. The 3” length gives plenty of freedom without feeling too short. Really happy with the fit and comfort.
Love these shorts so much, can’t wait to get them in every single colour. The fit, the way it looks just amazing
I bought these two pieces from MN for the first time and am happy with the products. The shorts are medium size and lucky I chose the tank top in small size as medium would have been too baggy. Hope they stand the test of time in the wash and my gym workouts.
Very good gym shorts I have a few pairs highly recommend
Great fit and material!
Bought these shorts for my partner, super light weight
Taken sooo long to do a review coz hubby steals them straight off the washing line the moment they are washed and dried, he now has 4 pairs of this style loves the look and the feel of the material but this colour is his fav
Super comfy & light! Perfect busy on your feet at work, not just in the gym! Definitely be back for more.
Comfort meets functionality in these gym shorts! With a blend of breathable fabrics, they keep you cool and dry throughout your workout. The cut is perfect for me, and they look amazing. Also love the colour! These shorts aren't just about performance; they also score high in style. The length is perfect also.
Great shorts! Fit great 🤙
Bought these in red for a dress up and they were actually so comfy. So I bought three pairs for the gym!
These shorts are seriously impressive. The 3.5-inch inseam is the perfect length for training and does an incredible job of showing off the quads. They sit perfectly and make your legs look absolutely impeccable, especially when you’ve got a good pump going. They’re comfortable, give you plenty of freedom to move and the quality is excellent. Easily one of my favourite pairs of gym shorts.
Brilliant shorts
Best shorts ever. So comfy and fit well
Great material.
Product is a great fit and material. Very comfy
Great fit! Great fabric. Very comfortable
These shorts feel great on. Quick drying, light, breathable fabric. Perfect for gym or casual sports wear. The fit is good and highlights my gains all those hard leg day workouts.
I absolutely LOVE these gym shorts! The quality is outstanding—they’re super comfortable, breathable, and perfect for workouts or just relaxing. The fit is spot-on, and the design looks great too. I’ve worn them for running, gym sessions, and even just lounging at home and they perform amazingly every time. Highly recommend for anyone looking for top-notch activewear!
I absolutely LOVE these gym shorts! The quality is outstanding—they’re super comfortable, breathable, and perfect for workouts or just relaxing. The fit is spot-on, and the design looks great too. I’ve worn them for running, gym sessions, and even just lounging at home and they perform amazingly every time. Highly recommend for anyone looking for top-notch activewear!
I absolutely LOVE these gym shorts! The quality is outstanding—they’re super comfortable, breathable, and perfect for workouts or just relaxing. The fit is spot-on, and the design looks great too. I’ve worn them for running, gym sessions, and even just lounging at home and they perform amazingly every time. Highly recommend for anyone looking for top-notch activewear!
I absolutely LOVE these gym shorts! The quality is outstanding—they’re super comfortable, breathable, and perfect for workouts or just relaxing. The fit is spot-on, and the design looks great too. I’ve worn them for running, gym sessions, and even just lounging at home and they perform amazingly every time. Highly recommend for anyone looking for top-notch activewear!
Very nice length. Great for everything, gym, walking, shopping, swimming...