CzechBlack neopren disc has 4FL:.                                           
FLYING = ideal to start with dogfrisbee
FLOPPY = ideal for puppies and sensitive dogs
FLEXIBLE = ideal for hard tugging game
FLOATING = ideal for water games

Material: neopren
Availaible in two sizes:     
                                       standard = 22cm/ 90 g
                                       mini = 17cm/70 g.