Lock in. Give up control. Don’t even think about getting hard.

The Holy Trainer V4 Nano Black from Chastity Cages Co's HT Collection is built for submissives who crave tight, relentless control. At just 58mm in internal length, this compact cage keeps your cock completely contained—no room to grow, no chance to rebel.

A favorite among Doms and Dommes who demand strict obedience and zero excuses, the upgraded V4 design hugs the body with a curved, ergonomic fit. It eliminates rubbing and shifting for smooth, long-term wear. Whether under clothes or beneath leather, the sleek black finish adds a quiet dominance to your submission.

Designed for hygiene and built for full-time denial, the Nano Black is perfect for subs ready to take their chastity deeper.

Recommended by Chastity CAges Co for:

• Advanced submissives seeking ultra-tight restraint and full-time control

• Keyholders enforcing strict obedience with discreet, dominant aesthetics

• D/s couples practicing 24/7 chastity and posture-based denial

• Wearers transitioning to compact cages with zero stimulation access