Our knitted cotton head bands with a boho style are so comfy to wear. They stretch to fit all head sizes and they are sturdy enough to keep your hair back and out of your way. These measure approximately 15cm's in width which will give good coverage however, they can be scrunched up if you prefer a thinner band. In terms of opening and head circumference, our head bands are one size fits all and we find that they stretch open to fit all head sizes. If you do find them to be on the tight side, we recommend stretching them out between your hands before wear. The fabric is quite robust so you can be fairly forceful when doing this. MATERIAL: These bands are made entirely out of cotton with an elastic thread running through the cotton knit every 5mm's or so. This ensures the band has excellent stretch and remains secure on your head. The ends of the fabric are left raw so that they naturally roll up to finish off each end, eliminating the need for seams and hems. Occasionally, some excess fibres from the ends may shed initially, however, this soon settles. WHAT TO EXPECT & CARE INSTRUCTIONS: We create these headbands using dyed cotton thread imported from Nepal and like many cotton textiles from this region, they can have a slight earthy or musty smell. This smell can be attributed to the cottonseed oil within the fabric and exposure to different environments such as high humidity and warm temperatures throughout transportation of the cotton may also play a part. Headbands can be washed by hand only - please do not wash in a washing machine (including the hand wash setting). They can then be aired and dried in the sun.