Looking for a little something extra? The CyberSkin Xtra Thick Transformer Extension gives you more thickness and length, with an incredibly realistic feeling. This extension has more thickness both in the head and in the sleeve! This toy is 8.5" long. The sleeve is 4.5" long (it can be trimmed to fit with scissors), and there are 4 extra inches of length at the end. The head is just over 1.5" thick (5.5" around).