Airplane Green and Blue Collection Monthly Milestone Baby Blanket Branded Baby Milestone Blanket by Flying S Airplane Baby Milestone Blanket Planes and Clouds Milestone Etsy Airplane Milestone Blanket, Personalized Baby Boy Month Blanket Milestone Baby Blanket By Sparks And Daughters. Make sure your milestones are ranchy with this milestone blanket. Our original design is perfect to help you and baby show off those important throughout the year! 47 x 47in These blankets are 100% polyester.