All collars are made poly Pro nylon, have solids steel D rings, double lock snap closure, are adjustable, machine washable. Color selection available are black, red, blue, Navy blue, light blue, pink, purple, lavender, yellow, orange, lime green, grass green, Hunter green, * Dark teal, and light teal. I carryover 100 colors of embroidery threads, all the new neon colors, eight different glow-in-the-dark colors, and multicolor threads. * Sizes available are: exsmall=6"-10", small=10"-13", medium=13"-16", large=16"-22", exlarge=22"-and above. * ALL CUSTOMERS MUST EITHER UTILIZE THE GIFT BOX OR EMAIL SELLER IMMEDIATELY UPON PURCHASE WITH PETS INFORMATION. INFORMATION NEEDED: PETS COLLAR SIZE, THE COLOR FOR THE COLLAR, THE THREAD COLOR, PETS FIRST NAME, AND THE PHONE NUMBER. * All Collars Have Pets First Name and Phone Number Embroidered.