BIONIC STRIPES - Flex Shorts
BIONIC STRIPES - Flex Shorts
4.739856801 / 5.0
(419) 419 total reviews
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SKU:21BW653XS
Harder, better, stronger, faster. We have the technology. We can make him better than he was. Work it, make it, do it.
Check Out The BIONIC STRIPES Series
BANG! Flex Shorts offer maximum flexibility and responsiveness to adapt to any men's body form while maintaining great looks. Innovation in design: these men’s beachwear trunks are equipped with a Dual-Type “Hybrid Waistband” which merges a Flat Style section at front (with Hook-&-Loop closure), and an elasticated segment at the back side. This technical combination of two different waistband systems as an all-in-one option enables this bathing suit to adapt comfortably to the widest range of variations in waist sizes and adjusts to diverse men’s body shapes yet delivering a slick look with a perfect fit.
- Contoured fit
- Mid-length leg cut
(*For longer leg cut see Flex Boardshorts). - Two pockets in front
- Protective brief-shaped full liner inside
- Engineered Printing
- Water Repellent
- Highest UV protection (UPF 50+) in swim trunks
- Chlorine, salt & sun resistant
- Sweat proof
Leg height for these Flex Shorts: Mid-Length
Inseam: about 5” (12.5 cm) to 5.3” (13.4 cm) from XS to 3XL
Note: for swimwear in general, the rule is that measures are stated mostly by reference of “regular-clothing waist size” (not actual body measures). Using the example on this table, if you usually wear 33” in jeans or pants, then a Large should be your size of reference for our beach shorts.
Model is wearing size M.
Model measurements: 32" waist - 5' 9" Height.
Perfect fit guaranteed or your money back.
- Low-rise cut for sexier masculine fit
- Tapered sides from waist down for enhanced contoured fit
- Two pockets on front, equipped with water and sand resistant zippers, deep enough to fit even larger smartphones (or wallets, IDs, credit cards, keys, etc.)
- An extra Velcro-strap pocket with flap on the back
- Hook-&-Loop closure cord, with signature brand-engraved metallic tips
- Drainage grommets
- Exterior fabric: 88% Recycled Polyester Yarn and 12% four-way-stretch Spandex (Elastane) allows perfect contouring to the body and comfortable movement
- Protective brief-shaped full liner inside made with superior-quality skin-soft, light, and comfy blend (90% Polyester - 10% Spandex), fast drying, anti-bacterial treatment, odor protected
- Velcro fly closure
- Water repel: hydrophobic coating treatment that protects the fabric, preventing liquid absorption, avoiding stains like from colored drinks or liquids, and facilitating removal of dirt particles
- Highest UV protection (UPF 50+) in swim trunks
- Chlorine/Salt/Sun-resistant: Eco-friendly inks deliver colors that remain bright and vivid longer, and will not fade when exposed to chlorine and saltwater; or upon washing and exposure to sunlight
- Sweat proof: Advanced technology that prevents fabric discoloration on contact with perspiration
Leg height for these Flex Shorts: Mid-Length
Inseam: about 5” (12.5 cm) to 5.3” (13.4 cm) from XS to 3XL
Note: for swimwear in general, the rule is that measures are stated mostly by reference of “regular-clothing waist size” (not actual body measures). Using the example on this table, if you usually wear 33” in jeans or pants, then a Large should be your size of reference for our beach shorts.
Model is wearing size M.
Model measurements: 32" waist - 5' 9" Height.
Perfect fit guaranteed or your money back.
Machine wash cold on delicate cycle, or hand wash.
Do not iron or dry in shade. Do not wring or scrub.
Do not use chlorine-based whiteners or stain removers. Do not use fabric softeners.
Wash only with similar colors.
Avoid contact with rough surfaces or sharp edges to prevent damage to the fabric.
Your Swimsuit is made with a premium quality fabric, which feels incredibly smooth and soft to the touch, and therefore should be treated as careful as other fabrics of similar high-end appeal, like silk or rayon. Be attentive when sitting or leaning against pool borders or steps made of stone or concrete finishes, as rubbing the fabric of your Bang! swimsuit against those may damage the appearance of the fabric.
Also be careful with swimming pools, jacuzzis, or similar places where water may have a high concentration of chlorine. Exposing the type of high-quality/delicate fabric of this swimsuit to water with unbalanced levels of pH (as in when high concentrations of chlorine or other chemicals are present) may leave residues of permanent discoloration ("yellowing effect") on the fibers of the garment. In case exposure happens, we recommend washing and rinse your swimsuit with fresh clean water as soon as possible. Leaving your swimsuit to dry if it's wet with chlorinated water, may create yellow residues of color on the fabric, causing permanent damage to its fibers.
Returns or exchanges for this item are accepted within 30 days of your order. Items must be unworn, unwashed, with tags and labels still attached, and in original packaging. See our Returns Policy here.
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Awesome trunks
The ladies love them. I love them. Comfy and stylish, confidence boosting. Liner is super comfy. Only issue is that the rivet on the back pocket can bend a bit and get caught on chairs.
Awesome trunks
The ladies love them. I love them. Comfy and stylish, confidence boosting. Liner is super comfy. Only issue is that the rivet on the back pocket can bend a bit and get caught on chairs.



Make more!
Great quality and great fit -- for the gym or for whatever you're doing.

Love them.
I am a 32” waist and am 5’9”. Bodybuilder so I have larger legs and went with the large size. Fit perfect and perfect length. No gut crunching and feel very comfortable with the length in a public setting. No complaints at all. Favorite thing about these would be the board shorts front and elastic waistband in the back, which seems to sit a little lower on the waist and really helps to prevent any gut crunching. Bought 2 more pairs after the first.


One of my fave pairs of shorts!
Bought a size med. Super comfy and perfect fit while giving a stylish flare. Love them.

Bang on!
These shorts were part of my first order with Bang, along with a tank and workout shorts. I’m thrilled at the consistently high quality. These shorts fit like a glove. I’ve already placed my second order and plan to order more in the future. Bang is now my go-to for all my lounge and fitness wear.

sexy shorts
Perfect fit and feel. So nicely made and get loads of compliments in them, no matter where I am!! Get a pair or two.

Not the design I was expecting
The shorts look great, however the shorts can’t be pulled up very far due to the awkward design. If I don’t want to wear them as low riding shorts they absolutely crush my groin. Awkward fit for me and I am quite slim.
