💗Invisible Disposable Collar & Cuff Sweat Liners Leggings & Underpants It is an electronic testing

It is an electronic testing device for routine monitoring of pH and chlorine (Cl2) levels in swimming pools

Smooth polished rounded edges

stop unwanted battery drain and prevent theft or unauthorized use

Avoid using harsh chemical cleaners or abrasive scrubbers on the wooden board and metal frame to preserve the finish

The Newly Upgraded Scarf adopts the principle of infrared heating

💗Invisible Disposable Collar & Cuff Sweat Liners Leggings & Underpants It is an electronic testingFEATURES ULTRA THIN & INVISIBLE: At just 1 mm thick, this under collar liner stays completely hidden under clothing while allowing skin to breathe naturally. Its lightweight, breathable design ensures no irritation or discomfort, making it ideal for all day wear. HIGH EFFICIENCY SWEAT & STAIN ABSORPTION: Strategically placed on collar and cuff areas, the liner quickly absorbs sweat and prevents oil stains from setting in. It maintains shirt freshness,