hey I got my Martingale Collar from www.sitstay.com  this is a good deal!!!only problem is I had to send it back it was TOO BIG! I got a medium for Shamus (he has NO NECK) but the other boys pulled it off him! so if you order 1 get the next size down! they are VERY adjustable!the medium would fit a LAB! I like that they come in 3 web-widths too! the 3/4 is too wide for him (no NECK!) so I got the next size down 3/8 this time! I'll send PIX when it gets here again next week! the only problem I see is that they always hall eachother around by there collars so it might work either...well see!