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X-Large is the size that often gets overlooked: too big for Large, not quite XX. The OXBALLS SLINGJOCK in Pool, X-Large, is a jockstrap cut for a 40–42 inch waist, which suits broad, rugby-type builds, dad bods and anyone who finds Large a squeeze. In blue, it's colourful enough to feel like a treat but easy to wear every day.

Who X-Large suits

The SLINGJOCK size chart is based purely on waist measurement, and X-Large covers 40–42 inches. Wrap a soft tape around where the band will sit, keep it level and relaxed, and read the number. If it's 39, you're between sizes; Large will feel firm and X-Large relaxed. At 43 or above, move up to XX-Large. If you're broad through the chest and shoulders but slimmer at the waist, size by the waist; the jock doesn't care about your upper body.

How this jockstrap sits on a solid build

Big thighs and a muscular seat are where cheap jocks fail: thin rear straps roll into cords and dig into the crease. The SLINGJOCK uses flat-tube elastic with rounded edges, which stays flat and frames each cheek. The leg straps slide along the edge of the pouch rather than being stitched in place, so when your hips move, the straps go with them and the pouch doesn't drift off centre. Up top, the band is firm enough not to fold over a stomach, with a plush lining on the inside.

Wearing blue under gym kit

Pool is OXBALLS' blue, and blue is a forgiving training colour. It doesn't show sweat as much as white, and under black or grey shorts it disappears completely. The soft-rib fabric is 94% cotton with 6% spandex, so it breathes during a long session and stretches with you. The STASH pocket on the hip is sized for a locker key or a card, so you can leave your bag in the locker and still get back in. Note that it's cotton underwear, not swimwear, so it shouldn't go in the pool despite its name.

Lift, ring and look

The pouch has a BUNGEE elastic sewn inside, which OXBALLS describes as a cock-ring lifter: it raises and pushes the package forward for a more defined shape. Every SLINGJOCK also includes a separate rubbery JOKFIT ring. They're both optional. At the gym you'll probably leave them alone; on a night out you might not. A raised 3-D OXJOK logo sits on the front band, with an OX logo at the back. If you plan to use the ring, read up on how cock rings work first.

Laundry

Treat it like your favourite gym top. Wash it cold on a gentle cycle, don't add bleach, and dry it on a rack. Skip the dryer and iron, because heat wears out the elastic and lifts the raised logo long before the cotton gives up.

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: X-Large, 40–42" waist
  • Colour: Pool (blue). Also in XX-Large and Large; X-Large also in White Snow

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Helpful Information

Frequently Asked Questions

Helpful answers about OXBALLS Slingjock Upthrust Slider-Strap Jock – Pool / X-Large.

What waist size is an XL jockstrap?

In the SLINGJOCK range, X-Large fits a 40–42 inch waist. Measure where the band will sit with a relaxed soft tape. At 43 or more, XX-Large is the better choice.

I'm 39 inches. Large or X-Large?

Either can work. Large will feel firm and secure at the band; X-Large will feel more relaxed. If you sit for long periods or prefer looser underwear, go with X-Large.

Will the rear straps roll into cords?

They're flat-tube elastic with rounded edges, designed to stay flat across the seat. If they keep twisting or digging in, check your size: a jock that's too small pulls the straps tight.

Is the SLINGJOCK good for training?

Yes. The leg straps slide with your hips, so squats, lunges and sprints don't pull the pouch sideways. The firm band stays put, and the cotton-spandex fabric breathes during a long session.

Do I need to use the cock ring?

No. The JOKFIT ring is an optional extra in the box. The jock works as standard supportive underwear without it, and you can leave the BUNGEE lifter relaxed too.

Is Pool colour-fast?

It holds up well if washed cold, without bleach, and dried away from heat. As with any coloured cotton, wash it with similar colours for the first few washes in case any excess dye comes out.

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