Crayola Twistable Case - Twist up the fun! Crayola Twistable Case offers a complete variety of colouring fun. Pick your favourite Twistable twist the barrel and watch it grow! 16 original Twistable 8 metallic Twistable and rainbow Twistables. The information provided here is as complete and accurate as possible; however, product names, colours and/or materials are subject to change without notice.