We're pleased to be able to offer samples of Seventh Generation nappies. We know that it's good to be able to try before you commit to buying a full pack or carton, so we offer samples across all our ranges of eco disposable nappies.

Babies come in all different shapes and sizes and they all eat and drink different quantities. You may find that although the baby is still within the recommended weight range for the size, the next size up is more absorbent and has a better fit, especially at night.

There is an overlap in sizes in the larger nappies to take into account that by the time babies reach this weight range, there can be a much bigger discrepancy in ages and shapes, which may mean that one 13kg baby is fine in size 4, but another 13kg baby needs the size 5.

We find that the optimum weight ranges are:

• Size 1: 4-6 kgs (the first 2-6 weeks)
• Size 2: 5-8 kgs (the first 2-3 months)
• Size 3: 7-13 kgs
• Size 4: 10-17 kgs
• Size 5: 12 kgs plus