Alto Sax 3.5 Rico Pack 3 The Rico reeds are made from premium cane and are a popular choice among saxophonists of all levels. They are known for their consistency and are designed to provide a balanced sound with good projection. The 3.5 strength is considered to be a hard strength, making it a good choice for advanced players who are looking for more control and a darker sound. This strength can also be suitable for some intermediate players, depending on their personal preference and playing style. The Pack 3 packaging refers to the number of reeds included in the package. In this case, there are 3 reeds in the pack, making it a good option for players who want to try out the reeds without committing to a larger box. Overall, the Rico reeds in 3.5 strength and Pack 3 packaging are a great option for alto saxophonists who are looking for a balanced sound with good projection and prefer a harder reed for more control and a darker sound. However, it's important to note that every saxophonist's preferences can vary, so it's a good idea to try out different reeds to find the ones that work best for your playing style and needs.