Suit: The equipment requirements for the IFLY Developmental Group are that you have a well-fitting suit (such as a jammer for the boys and a one-piece suit for girls). Grab bag suits are usually the best priced suits for practice. Those suits can be found here.
Cap: You will need to have an IFLY team cap. Non-personalized team caps can be purchased from Coach Tanja. If you wish to have a personalized IFLY team cap (with your swimmer's name on the cap), those caps can be found here.
Goggles: Good fitting goggles are a must for swim practice. There are many options available. If your swimmer is under that age of 12, or has a narrow face, a Junior goggle might fit them better. For other face shapes, or older swimmers, a regular goggle will work. Typically, for swimmers under the age of 14 or who have narrow faces, these goggles fit the best. For swimmers older than 14, these goggles fit the best.