Specification: Please select the size based on foot length Product Name: Lightweight and Comfortable Slippers Size 36-37=Foot length 22.5 cm=inner shoe length 23 cm Size 38-39=Foot length 23.5 cm=inner shoe length 24 cm Size 40-41=Foot length 24.5 cm=inner shoe length 25 cm Size 42-43=Foot length 25.5 cm=inner shoe length 26 cm Size 44-45=Foot length 26.5 cm=inner shoe length 27 cm Heel height：3.5 cm How to Measure Your Foot Length (For the Best Fit): 1.Place a piece of paper on the floor and stand on it with your heel pressed against a wall. 2.Mark the tip of your longest toe on the paper with a pen (keep the pen straight up and down). 3.Measure the distance from the heel of the paper to the mark – this is your foot length. 4.Check the size chart with this length. If you have long toes, wide feet, or a high instep, it is recommended to choose 1-2 sizes larger when purchasing. Note: 1.The length marked on the sole should not be used as a reference. Please follow the foot length as the selection criterion. The length of the sole cannot represent the length of the foot; 2.Due to the difference between dient monitors, the picture may not reflect the actual color of the item; 3.Due to different measuring tools, there may be an error of 1 cm. Please refer to the received product as the standard. Dear valued customer, Thank you for choosing our store! We truly hope you love your new slippers. If you are satisfied with your purchase, we’d really appreciate it if you could take a moment to leave a 5-star feedback. Your honest review helps other buyers make better choices and encourages us to keep improving! If you have any questions or issues with your order, please contact us first before leaving feedback. We’ll always do our best to solve any problem for you. Thank you for your support! ❤