The Proviz Switch Gilet sleeveless vest is made from a dual-layer out shell that can be worn either way to give you Hi Viz fluorescent yellow for daytime use and Reflect360 for nighttime use. Be safe, be seen - wear a Proviz You'll get... Dual layer reversable material 100% reflective. The Reflect360 vest looks grey but turns white when light is applied. Use at night Fluorescent yellow on the other side for daytime use Two-way reversable zipper Chest pocket Back pocket Zip pullers Elasticated waist High length soft colar that zips up to your chin to keep the cold out Perforated back for enhanced breathability Designed in England Size guide WOMEN (UK) Size 8 - Chest 83 - 87cm Size 10 - Chest 88 - 92cm Size 12 - Chest 93 - 97cm Size 14 - Chest 98 - 102cm Size 16 - Chest 103 - 107cm