Brand: Tricandide Color: Sunglasses Features: Sound Activated LED Flashing The lights flashes colors in time to music and sound T-Shirt Fabric: Cotton Night Club,Bar,party Wearing Please refer our size chart below before select size,The size may run small, please order one size large. Details: 1.Voice drive controlled by the sound, followed by the sound or music rhythm flashing light, rhythmic, not light if there is no voice, the voice can not be long bright. (Need to install two AAA batteries, please bring your own battery) 2.Lighting duration: Around 6-10 hours. (two AAA batteries) 3.Because the luminous film can not be washed, so before washing clothes, remove the luminous film, drives, and lines. 4 Size chart (inch): XXS: Shoulder Width-15.7/ Chest-36.2/ T-Shirt Length-23.2/ Sleeves length-7.3 XS: Shoulder Width-16.5/ Chest-37.8/ T-Shirt Length-24.4/ Sleeves length-7.7 S: Shoulder Width-17.3/ Chest-39.4/ T-Shirt Length-25.6/ Sleeves length-8.1 M: Shoulder Width-18.1/ Chest-40.9/ T-Shirt Length-26.7/ Sleeves length-8.5 L: Shoulder Width-18.9/ Chest-42.5/ T-Shirt Length-27.9/ Sleeves length-8.9 XL: Shoulder Width-19.7/ Chest-44.1/ T-Shirt Length-29.1/ Sleeves length-9.2 XXL: Shoulder Width-20.5/ Chest-45.7/ T-Shirt Length-30.3/ Sleeves length-9.6 3XL: Shoulder Width-21.2/ Chest-47.2/ T-Shirt Length-31.5/ Sleeves length-10 4XL: Shoulder Width-22/ Chest-48.8/ T-Shirt Length-32.7/ Sleeves length-10.4 5XL: Shoulder Width-22.8/ Chest-50.3/ T-Shirt Length-33.9/ Sleeves length-10.8 Please noticed that due to the different measurement methods, the actual size may approximately difference 0.5-1.