Your Thermal Vibes cap is made with high quality 100% cotton material. It is made to last for many years to come! In addition, unlike other brands. Thermal Vibes sells replaceable pouches. If for some reason, your flaxseed pouches become damaged, you can simply replace them, without needing to purchase another cap. The likelihood of this is happening is very slim, thus why you do not see our pouches being sold in our website. If for any reason, you need a pouch replacement, please do not hesitate to contact us!