Different cuff sizes for mechanical blood pressure monitors LD. If you have a classic mechanical blood pressure monitor "Little Doctor" (models LD71, LD80), choose a cuff with two tubes. If you use the combined mechanical blood pressure monitor "Little Doctor" (models LD91, LD81), choose a cuff with one tube. Sizes, materials, colour: 7-12 cm, cotton, yellow cuff for newborns 11-19 cm, cotton , green cuff for babies 18-26 cm, cotton, blue cuff for children and adolescents 25-36 cm, nylon, grey, standard cuff forr adults (this is included with the purchase of a blood pressure monitor) 33-46 cm, nylon , grey, enlarged cuff for adults MANCHETTE COVER 1 YEAR WARRANTY.