Flat martingales are not widely seen but are an excellent choice of collar.  They are not easily slipped and give a mild squeeze when tension is applied to the collar.  The close is limited as well.  Typically they are smaller, basenji and whippet sized, but the greyhound to the Great Dane are a fine match for this style of collar as well.  ~ Prices shown are for In-Stock Flat Martingale Collars only.  Custom made collars will be 20% more.