Collins Big Cat provides complete support for primary reading with books banded from Lilac to Pearl. Collins Big Cat sets are the ideal way to try Collins Big Cat, plug gaps and boost your reading resources at unbeatable prices. All sets include a built-in 20% discount. The Sapphire Band Set contains 1 copy of every title available within Band 16/Sapphire. Sapphire band books offer longer reads to develop children's sustained engagement with texts that are more complex syntactically. The Sapphire Band Set is aimed at Key Stage 2 pupils in Year 5 and contains 57 fiction and non-fiction books.