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Sei Mio Seated and Mistreated Under-Chair Restraint System
Product guide

Sei Mio Seated and Mistreated Under-Chair Restraint System

Sei Mio Seated and Mistreated is an adjustable under-chair restraint system for consensual adult seated play. Its wrist and ankle cuffs, collar and webbing are intended to work with a compatible chair, which is not supplied.

At a glance

  • Adjustable nylon webbing is designed to fit around the legs of a compatible chair, without drilling or permanent fixtures.
  • Two wrist cuffs and two ankle cuffs have soft velvet lining and adjustable fastenings.
  • Multiple D-ring positions allow adjustment of wrist-restraint height. The collar connects to the upper strap as directed.
  • The listing describes wipe-clean care, with the cuffs and straps left to dry fully before storage.
Price
£41.99Save 16%

Reference price: £49.99

Price checked: 14 Nov 2026

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Pros and cons

Pros

  • The set combines four lined limb cuffs, an adjustable collar and chair straps for a coordinated seated setup.
  • Adjustable webbing and several wrist D-ring positions allow some flexibility in fitting and restraint height.
  • The listed setup does not require drilling or permanent chair fixtures.

Cons

  • Use depends on having a compatible, stable chair, which is not included.

Technical specifications

7 specifications
Identity
BrandSei Mio
Design and use
Operation modeManual
Intended settingIndoor
ColourBlack
Manufacturer part numberSM-041
Country of originChina
Materials34% nylon webbing, 31% metal, 28% polyester and 7% PVC

What to know before buying

  • The manufacturer says the webbing is designed for most standard chairs, but fit and stability depend on the specific chair and strap routing. Agree boundaries and a stop signal, keep releases accessible, do not leave a restrained person unattended, and avoid pressure on the neck. Inspect fastenings, webbing and hardware, follow the supplied setup and release instructions, and store out of children's reach and view. Do not assume other cuffs or accessories will fit its attachment points.

Who is it for?

A good fit for

  • Adults seeking a chair-based restraint setup for consensual seated play.
  • Buyers who want lined wrist and ankle cuffs with an adjustable collar and webbing.

Less suited to

  • Anyone without a stable, compatible chair or who needs a self-contained setup with a chair included.
  • Buyers seeking a restraint system with confirmed compatibility for other cuffs or accessories.

Frequently asked questions

Is a chair included?

No. The listing describes straps for use with a compatible chair and says the chair is not supplied.

What does the kit include?

The product description identifies an adjustable collar, two wrist cuffs, two ankle cuffs and a chair strap system.

Will it fit any chair?

The webbing is described as designed for most standard chairs, but compatibility is not guaranteed. Check the chair's structure, stability and strap routing before use.

How should it be cared for?

Wipe the straps and cuffs clean, let them dry fully, and store the system in a cool, dry place. Inspect the fastenings, webbing and hardware before reuse.

Alternative options

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