The exigo seated calf raise is a plate loaded machine that will help strengthen and tone your calf muscles this is a durable machine made from steel you know this is a good product as the manufactures have put a excellent warranty on it to ensure peace of mind the easy to use machine is also adjustable so anyone can use it no matter your size and shape the seated calf raise has a large bar for adding plates as you are working your calf muscles they will need more weight than some other part