Single Finger Fluorescent Knuckle Backpack Decoration

Material: PA plastic+ fluorescent special material
Length: 53MM
Width: 26.5mm
Thickness: 15mm
Fingerhole diameter: 24mm
Weight: about 27g
Special attribute: Luminescence (absorbs energy through a light source and emits light in dark areas, producing a fluorescent effect)
Light sources include but are not limited to: sunlight, light, fire, and other luminescent materials
Scope of application: Outdoor self-defense, survival through broken windows, keychain,