Crystal clear. Deeply humiliating. Totally in control.

The Holy Trainer V4 Nub Clear from the Chastity Cages Co Holy Trainer Collection is a micro chastity cage that leaves nothing to the imagination—just 45mm of visible submission. Designed for those serious about male chastity, this ultra-short device keeps you locked tight and fully on display.

Crafted from transparent medical-grade bio-resin, the V4 Nub is lightweight, breathable, and discreet under clothing—yet brutally revealing in private. Its ergonomic shape stops erections before they start, making it perfect for long-term chastity wear, cock control, and keyholder domination.

The built-in lock system and forward pee hole make everyday wear clean, simple, and escape-proof. Whether you're self-locking or under strict orders, this cage ensures you're seen, denied, and owned.

Recommended by Chastity Cages Co for:

• Advanced submissives seeking ultra-compact, high-visibility restraint

• Keyholders who enjoy inspection, teasing, and visual humiliation

• D/s couples practicing full-time chastity and strict obedience

• Wearers transitioning to micro cages with zero stimulation access