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The CB-X CB-6000S is the short member of the CB-6000 family: the same clear polycarbonate design and U-ring system, with the cock cage cut down to 2.5 inches. That shorter tube holds things closer to the body, so it feels noticeably more restrictive than the standard model while staying wearable for long stretches. It's a common second cage for people who've settled into chastity and want their keyholder to tighten the rules.
Three-quarters of an inch doesn't sound like much, but it's the difference between a cage that roughly matches your soft length and one that sits a little shorter. The 6000S leaves less room to swell, so arousal is felt sooner and more firmly against the walls of the tube. It also sits flatter under briefs and trousers, which is why plenty of wearers find it easier to forget about during the working day than the longer model.
Assemble it unlocked first. The U-ring opens so you can place it behind the testicles without squeezing them through a closed hoop, then it closes around the base of the shaft. Pick a spacer, guide the tube over the shaft, and check that the locking pins line up. When it all sits flush, slide the lock into the housing underneath.
Five U-rings come in the box, numbered 1 to 5 from largest to smallest, using CB-X's usual 2-inch to 1.5-inch spread. Measure the circumference where the ring will sit, divide by 3.14, and try the ring closest to that figure. If the tube creeps forward when you sit down, go a size down or drop a spacer; if the skin around the ring looks dark or feels cold, size up straight away.
The clear finish lets you and your keyholder see the fit at a glance and spot any skin pinched at the ring. The pink CB-6000S has the same cage and parts in a tinted shell. If 2.5 inches turns out to be too snug, the standard CB-6000 is 3.25 inches and uses the same style of ring, so your sizing knowledge carries straight over.
A shorter tube means less space for water to flow through, so hygiene takes a bit more attention. Sit down to urinate, then run the shower through the vents and tip opening. Once a day, or whenever your keyholder agrees, unlock fully and wash each part in warm, soapy water. Dry everything before it goes back on, since damp skin under a ring is what usually causes irritation.
A Master Lock and key handles everyday wear. The five numbered plastic locks are for trips and for longer lock-ups: they hold no metal, and a keyholder can note the number to confirm it hasn't been replaced. Pack the key in hand luggage whenever you travel.
New to keyholding? Our guide to safe BDSM covers trust and check-ins, and the chastity collection has every cage style we stock.
Helpful answers about CB-X CB-6000S Chastity Cock Cage Kit – Clear.
The CB-6000S tube is 2.5 inches long; the CB-6000 is 3.25 inches. Both use the same style of U-ring, lock and spacers, so the difference is purely how much room the cage leaves and how restrictive it feels.
It can be if your soft length is on the shorter side, but most first-timers are more comfortable starting with the longer CB-6000. A cage that's too short can push the penis back and pinch at the ring, which makes long wear harder.
Try a smaller U-ring or remove a spacer so the tube sits closer to the ring. Make sure the ring is fully behind the testicles, not just around the shaft. If it still slips, the cage may be too short for your anatomy.
Many people do once the fit is settled. Wear snug briefs or a jock to hold it against the body, keep sessions short at first, and rinse it straight after, since sweat trapped under the ring is the most common cause of chafing.
The cage, five U-rings, locking pins and spacers, a Master Lock with key, five numbered plastic locks, a drawstring storage bag and a lube sample packet. Everything you need to size and lock it is included.
Nighttime arousal is common and feels more intense in a shorter cage. If it wakes you or hurts, unlock and sleep without it for a while, or move up a ring size. Build up to overnight wear only after full days feel easy.