SONIC PRIME: PLUSH BACKPACK - 11" - Official Sonic Back to School Bags for Boys & Girls. Based on the Sonic Prime Netflix Show. TAKE YOUR FAVORITE SONIC PRIME BACKPACK: 11” tall Sonic Prime plush backpacks, have the coolest, softest schoolbag in your class! CREATE NEW EXPERIENCES WITH YOUR SONIC BACKPACK: Have fun with friends as you take your Sonic Prime backpack with adjustable straps to recreate & enjoy Sonic adventures at a Sonic party. OFFICIAL SONIC PRIME TOYS: the Sonic Prime range has a vast array of collectibles, clip-on plush, plush backpacks, and articulated figures based on the Netflix TV series. All Sonic Prime toys are licensed by SEGA.