If you would prefer to upgrade this collar to a Martingale just purchase this listing then click on link below and also add the martingale upgrade.
http://www.etsy.com/listing/62235364/make-my-collar-a-martingale
1.5 Sizes; Medium: 12"-18" or Large: 16"- 22". PLEASE SPECIFY SIZE IN THE MESSAGE TO SELLER BOX DURING CHECKOUT.
For a 1" width collar please click on link below.
https://www.etsy.com/listing/93141779/1-adj-quick-release-dog-collar-peacock?ga_search_query=peacock&ga_search_type=user_shop_ttt_id_5915643
Matching 1" leash is available. Please see Combo sale sets to save on the pair.
https://www.etsy.com/listing/62235175/sale-1-adj-quick-release-dog-collar
"Like" our facebook page - http://www.facebook.com/pages/Fairy-Tail-Collars/124311167606607.
Proceeds from each purchase go towards the care of our Animal family: 4 greyhounds, 2 pit bulls, 1 doberman, 6 cats, 8 horses, 1 bird. Many of which we rescued from either off the track (greyhounds), an animal shelter or slaughter.
Have any questions?
Contact the shop owner.
