why we use glass beads for weighted blanket?
DH™ Micro glass beads are considered one of the higher-end weighted blanket fillers. These tiny glass fillers resemble white sand or salt crystals in appearance. These glass beads are perfectly smooth, making them a great option for individuals bothered by the texture of plastic poly pellets.
DH™glass micro beads are an environmentally friendly alternative to poly pellets and are also completely hypoallergenic. These materials are also machine washable and dryer safe. Almost any craft store will carry these tiny beads, as do a  Variety of other online retailers
Generally, DH™ glass micro beads are a little more expensive than poly pellets, but because they are heavier than plastic pellets, the blanket will not require as many units.
A 20-pound blanket made with plastic poly pellets will have 2 to 3 times more individual units than a 20-pound blanket filled with micro glass beads. Often, this difference in price point is offset by the lesser number of individual weights. They might cost more, but since the blanket will not need as many, it evens out.
Since fewer DH™ glass micro beads are necessary to create a weighted blanket, the blanket will be thinner and less bulky.
DH™ glass micro beads are a great option for those with severe auditory and sensory sensitivities. They are also a great option for individuals who desire the DTP effects of a weighted blanket without added bulk. Consider micro-glass beads for an environmentally and sensory friendly option.