Specifications： S: length 15cm， 20-24cm neck， chest 28-32cm is less than 4kg M: length 17cm， 22-26cm neck， chest 32-36cm is less than 7.5kg L: length 19cm， 26-32cm neck， chest 38-44cm is less than 11.5kg Traction bandwidth 2cm， long 120cm color1 color2
