NUK feeding products commonly come in 5 oz, 8 oz, and 10 oz sizes for bottles and learner/sippy cups.
NUK product listings show a range of recommended ages that vary by item. Examples include “newborn and up,” “1 month and up,” and options recommended for around 8 months and older, depending on the cup or bottle type.
NUK sippy and learner cups are described as leak-proof and spill-proof; some models are also noted as break-resistant. Several learner-cup types include explicit guarantees of being spill- and leak-proof.
NUK offers transition-focused products such as learner/transition kits, soft spouts, and removable handles designed to make the bottle-to-cup change easier according to product descriptions.
NUK bottle bodies are listed as plastic (often polypropylene) and nipples are made from silicone. Many listings also note the products are BPA‑Free.