The silicone sample pack comprises three pairs of earplugs: Insta-Putty, Mack's Pillow Soft for adults and Mack's Pillow Soft for children. The children's size is suitable for little ones up to the age of about 6 (officially) or for anyone with little ears.

These silicone earplugs are described as "cushion soft" and are about the most comfortable earplugs you can buy. They repel water for swimming and showering and can also be used for snoring and loud music. One size suitable for children and adults alike. Contents: one reusable pair in a smart rigid case. NRR approx 22dB.
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Two pairs of premium silicone putty earplugs. NRR approx 22dB.

Easy to use, supremely comfortable. The soft silicone putty moulds to your ears for a unique waterproof and airtight fit. Particularly suitable for sleeping and travelling, as well as for keeping out water. Noise Reduction Rating: 22dB. Each pair lasts approximately five uses with careful daily (or nightly) use. Many people find they get more uses from each pair than this. Contents: two reusable pairs in a shatterproof carrying case.
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6 pairs of Mack's best-selling silicone earplugs at a value price.

Larger and safer than other children's earplugs, Mack's junior size Pillow Soft earplugs provide a better seal and accommodate all children's ear sizes up to the age of about six. These earplugs are particularly suitable for children who have had grommets inserted or those who suffer repeated ear infections. This is because the earplugs sit across the opening to the ear canal rather than having to be pushed down them. If you're not sure if these plugs are suitable for your child, please consult your GP or ENT consultant first. For swimming, noise, loud events, flying discomfort and so on. Six pairs.
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Three packs of Mack's Pillow Soft children's putty earplugs at a value price. 18 pairs in all.