XS - L
Top: Yellow, Light Pink, Vivid Pink, Dark Pink, Orange, Red
Bottom: Grey, Lime, Purple, Blue, Navy, Green

Note: S and M Colored Buckles are threaded through the male piece only once to make adjustment easier. This should not cause any issues with function and allow you to adjust the collar with ease. 

XL
Light Pink, Red, Navy

S/M, L, XL, XXL

L, XL, XXL

S/M, L, XL, XXL