Lined with thick thermal fleece of heavenly softness, our advanced version brings your step-on-clouds comfort to a next level by keeping your feet warm with better circulation. The 4.5cm sole thickness with a boat-shaped base is surprisingly cozy to walk on and therapeutic to achy or sore feet. Perfect for people who need extra cushioning due to foot pain, diabetes and other medical symptoms. FEATURES: We truly believe we make some of the most innovative products in the world, and we want to make sure we back that up with a risk-free ironclad 45 day guarantee. If you don't have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase. Buying items online can be a daunting task, so we want you to realize that there is absolute ZERO risk in buying something and trying it out. If you don't like it, no hard feelings we'll make it right. We have 24/7/365 Ticket and Email Support. Please contact us if you need assistance. Remember: Shipping usually takes 2-3 weeks read our Shipping for more details!