These are the best brushes we have ever used in well over 20 years of grooming. This green/gold single duo is 2 brushes in one. It has the same flexible head with green medium on one side and gold soft on the other for more sensitive areas. The flexiible head will reach the places other brushes cannot reach and it will last and last. I thinke get through about 10 cheaper brushes before we come close to wearing out an activet brush! Ideal for Bichons, Poodles, Cockapoos, Westies, Cockers etc.