The weight should vary depending on the size of the patient, according to National Autism Resources. It says that research suggests the appropriate amount of weight for these blankets can be 20-percent of the patient’s body weight.
“For a very long time there was no research done on weighted blankets. In order to have some frame of reference, the research that was done on weighted vests and backpacks was misapplied to weighted blankets,” explains the source. The newer research takes into account that the person won’t be standing when using the blanket, it adds. The site also has a list of recommended blanket weights for various ages – with the maximum weight at 25-pounds.