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Black Iron is the colour most people start with, and the OXBALLS SLINGJOCK in Large is a jockstrap that rewards it. The cut does the talking: a soft-rib cotton pouch that holds you up and forward, slider straps that move as you do, and wide elastic butt straps that frame rather than cut. In black, all that structure reads clean and deliberate instead of loud, and it goes with anything else you own.

Why a black jockstrap works as a first SLINGJOCK

A jock with this much hardware, including a hip pocket, a rubber logo and a lifter inside the pouch, can look busy in a bright colour. Black keeps it understated. It pairs with grey sweats, black gym shorts, leather or denim, and it won't show through dark trousers. It also hides the odd mark from a long day better than the lighter shades. If you're not sure what colour you'll actually wear, this is the one that won't sit unworn in a drawer.

Is Large your size?

OXBALLS sizes the SLINGJOCK by waist, and Large is cut for 36–38 inches. Measure around your body at the height where the waistband will sit, usually just below the navel, with a soft tape and no clothes in the way. Don't rely on jeans size: many brands label trousers smaller than the true measurement. If you land on 38 and like a firm waistband, Large is right. If you're at 39 or carry more through the seat and thighs, the X-Large gives the leg straps more room. At 35 or under, try the Medium.

How the slider straps behave

On an ordinary jock, the leg straps are stitched in a fixed spot, so when you squat or stride they pull the pouch sideways and you end up adjusting. Here the straps can travel along the pouch edge, so the pouch stays put while the straps shift with your hips. The butt straps are flat-tube elastic with rounded edges, meant to lift each cheek without leaving deep marks. The waistband is firm enough not to fold over, with a softer lining against the skin, which makes a difference when you're sitting for hours.

The lifter, the ring and the pocket

Inside the pouch is an elastic BUNGEE loop that OXBALLS calls a cock-ring lifter: it pulls everything upward for a more forward shape. Every jock also comes with a rubbery JOKFIT cock ring, which you can wear with the jock or on its own. Neither is required, and plenty of people use the SLINGJOCK as straightforward underwear. The STASH pocket on the hip holds a locker key, a card or folded cash.

Washing

The rubber logos and elastic are what wear out first, so keep heat away from them. Wash cold, by hand or on a gentle machine cycle, skip bleach, and dry it flat or on a hanger rather than in a dryer. No ironing and no dry cleaning. Black can fade slowly with hot washes, which is one more reason to keep it cold.

Specifications

  • Brand: OXBALLS (OXJOK), SLINGJOCK upthrust slider-strap jock
  • Fabric: 94% cotton, 6% spandex, soft-rib
  • Straps: slider leg straps; flat-tube elastic butt straps
  • Waistband: firm, non-rolling, plush lining; hip STASH pocket
  • Extras: internal BUNGEE lifter; JOKFIT rubber cock ring included
  • Branding: 3-D rubber OXJOK logo on front, OX logo at rear
  • Size: Large, 36–38" waist
  • Colour: Black Iron. Also in X-Large and Medium

See every colour and size in the OXBALLS range, or browse more men's underwear.

Helpful Information

Frequently Asked Questions

Helpful answers about OXBALLS SLINGJOCK Upthrust Slider-Strap Jock – Black Iron – Large.

What waist size is a Large SLINGJOCK?

Large fits a 36–38 inch waist. Measure with a soft tape where the waistband will sit, just below the navel, rather than going by your trouser label. If you're at the top of the range and broad through the hips, X-Large will feel less snug.

Will a black jockstrap show through my trousers?

Under dark trousers or shorts, no. Under thin white or pale grey fabric, black can show as a shadow, as any dark underwear does. The rubber OXJOK logo is raised, so very tight trousers may show its outline.

Do I have to use the JOKFIT ring?

No. The ring is an optional extra that comes with every jock. You can wear the SLINGJOCK as everyday support and keep the ring for when you want a more lifted, forward look, or use it on its own.

What does the BUNGEE lifter inside the pouch do?

It's an elastic loop sewn inside the pouch that pulls your package upward and forward. OXBALLS designs it to work as a cock-ring lifter. You can leave it relaxed if you'd rather the pouch just hold you in place.

Can I wear it to the gym?

Yes. It's a cotton-spandex jock with a firm waistband and straps that move with you, so squats and lunges don't drag the pouch sideways. The hip pocket holds a locker key. Wash it after sweaty sessions to keep the elastic fresh.

How should I dry it?

Hang it up or lay it flat. Skip the tumble dryer, because heat weakens the elastic straps and can lift the rubber logos. Avoid ironing and dry cleaning for the same reason.

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