Safe Materials; The best kitten bottles and puppy bottles use food-grade silicone or -free plastic, safe for repeated use. Silicone nipples mimic a mother's teat, encouraging natural sucking. Heat- materials let you warm kitten formula without warping, as cold milk upsets newborn stomachs. Adaptive Nipple Design; Quality kitten nursing bottle sets feature nipples engineered for comfortable sucking. Multiple Nipple Sizes; Growing pets need adaptable tools-versatile kits include nipples for newborns (0-2 weeks) to older pets. This lets your kitten feeding bottle or puppy bottle with your pet, avoiding frequent replacements. Easy Cleaning; Hygiene protects fragile immune systems. Quality kits include brushes for crevices and nipples, while wide-mouth kitten bottles simplify handwashing. Dishwasher-safe options save time for busy caregivers. Clear Measurements; Accurate portions prevent overfeeding or malnutrition. Top kitten bottles and puppy bottles have easy-to-read measurements, tracking kitten milk intake - vital for recovery monitoring or equal litter nutrition. Color:Blue & Transparent Material:plastic Package Contents: 1 set * Puppy Kitten Nursing Bottle Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.