The Alphabet Blocks are a set of 26 Peek-a-Blocks, 1 block for each letter of the alphabet.The blocks are good, nice-looking, textured and have little characters inside them. They are able to move and stuff and they look very cute!These blocks are lightweight too It's a very simple toy- Each block has clear plastic around the sides and tops with a capital letter written in filled-in bubble font on one side. Inside the plastic exterior there are items that begin with the letter being introduced on the blocks. Often the item shakes or rotates for added sensual experience. For example, the letter G block has a guitar inside it that spins around when the block is turned. These blocks are travel friendly as they come in a vinyl zip-close carry case which also makes it easier to store them. These blocks are definitely fun to build with besides being educational, and kids love playing with them.A great set of blocks for kids!!