Dominitoy™ Thermochromic Color-Changing Collar & Leash Set with Charm

Two pieces, one price. The collar is the same slim 1.4 cm strap as our single collar - 28 to 41 cm adjustable, 24 g - and the set adds a 100 cm (39 in) silver tone chain leash with a soft leather handle. The swivel clasp releases instantly, so the collar keeps working on its own when the leash comes off.

What Is a Thermochromic Collar and Leash Set?

Thermochromic pigment reacts to temperature rather than light, so the change happens against your skin: below roughly 31°C the strap is black, and as it warms the colour underneath shows through. No batteries, no switch, no app. A collar and leash set simply pairs that strap with a matching leash so the two pieces read as one object instead of two separate purchases - which is why most people starting a kit buy them as a set.

Chain Leash, Leather Handle: What's in the Set

• 1 × thermochromic collar - 1.4 cm wide, 24 g, 28-41 cm adjustable, pin buckle
• 1 × chain leash - 100 cm (39 in) silver tone chain with a soft leather-wrapped handle and swivel snap clasp

The 100 cm chain is light enough to live in a bag and still has a satisfying weight in the hand - the small detail that makes a leash feel like an object rather than an accessory. The handle is wrapped rather than bare, so there is no cold metal or hard edge in your palm.

Day Collar or Play Collar? One Clasp, Two Uses

This is the practical difference between a set and a single collar. Clip the leash on and it is play equipment. Unclip it and what is left is a slim black choker with a small paw or bell charm - quiet enough for work, dinner or travel, and unrecognisable as kit to anyone who does not already know. The swivel clasp turns freely, so the chain will not kink or twist when the direction changes. That one clasp is the whole reason this version exists.

How to Measure Your Neck for a BDSM Collar

Measure around the base of your neck with a soft tape, exactly where you want the collar to sit, then add 1-2 cm of comfort room. A correctly fitted collar sits snug, never presses on the windpipe, and still lets you slide two fingers underneath. This one adjusts 28-41 cm (11-16 in) across a multi-hole pin buckle, with a total strap length of 46 cm (18 in). Measure once and the fit is settled for good.

Thermochromic Collar & Leash Set Sizing

Collar: 1.4 cm wide, 24 g, 28-41 cm adjustable, 46 cm total. Leash: 100 cm (39 in) chain. Styles: F - paw charm, warms into hot pink; G - filigree bell charm, warms into violet. Same strap, same fit, two finishes - pick by the charm, not the colour.

Thermochromic Collar & Leash Set Specifications

• Collar material: thermochromic PU leather strap with alloy hardware
• Leash: 100 cm (39 in) silver tone chain with leather-wrapped handle and swivel snap clasp
• Collar size: 1.4 cm wide · 24 g · 28-41 cm adjustable · 46 cm total
• Colour reveal: F pink · G violet
• Included: 1 × collar, 1 × chain leash
• Closure: pin buckle (collar) · swivel snap clasp (leash)

How to Care for a Thermochromic Collar Set

Wipe the strap and the leather handle with a soft damp cloth and air dry - do not soak them, and avoid alcohol-based cleaners, which dull the thermochromic layer. Store flat, out of direct sun. Check the buckle, charm fitting and leash clasp before every use. Never use the leash to take body weight, never leave anyone unattended while the leash is under tension, and remember that a leash serves a scene you have already agreed to - it is not a substitute for a safeword.

Prefer the collar on its own? See the thermochromic color changing collar. Building the full kit? Add handcuffs and cuffs, or browse every BDSM collar and leash we make.