Heel measures approximately 1 inches"COZY&WARM - Soft, Lightweight Fleece and Suede Material,Keep Toasty and Comfort, You can also Layer Socks Under the Booties to Keep Your Little Ones Toes Warmer or more Snug Fit.EASY WEAR - Easy On, Easy Off, A Velcro Closure makes Our Infant Booties Easy to Put On, Take Off and Adjustable,And Most Importantly Stable On Your Baby's Feet Wont be Kicked OffHIGH QUALITY - Durable Enough to Maintain It's Shape and Feel after Extended Wash and Wear.CUTE & GREAT GIFT - Perfect For Walking,Playing,Crawling,Going Out,And Sleep Etc.These Booties would be a Best Baby Newborn,Shower,First Birthday Gift.[ SIZE TIP ] - The Age is for Your Reference,Please Measure Baby's Feet to Match the Shoes Length.If Your Baby has a Tiny Feet,You May need to Choose a Size Down,Thanks