SIZING IS BASED ON THE LONGEST DIMENSION, EITHER HEIGHT OR WIDTH. OFFICIAL CRAFTER OF THE NAVY: LICENSE NUMBER HOB_NTLPO_AAMD01 This activity supports the U.S. military and its veterans; however, it is not officially connected to or endorsed by the U.S. Department of Defense or any of its branches. I PROUDLY SUPPORT THE WOUNDED WARRIOR PROJECTEvery sticker is proudly made by us in the USA. I am a Navy veteran and former Seabee. Any issues with you order, please contact us, we will do everything in our power to make it right. Stickers are made from premium self-adhesive vinyl and will adhere to just about anything, car windows, laptops, glass, anything flat and smooth. In addition, these stickers are UV laminated to give it the additional strength and longevity that will allow your sticker to have an outdoor lifespan of about 5-8 years! APPLICATION INSTRUCTIONS WILL BE SUPPLIED WITH YOUR DECAL.