These weighted vests are made by perforated Neoprene and comfortable non-flammability materials which provide deep pressure to the body evenly and provide proprioceptive input and stability for the end users. Adjustable Velcro shoulders and sides for a comfortable fit or appropriate compression. Adjustable length feature. Meet the requirements of CPSIA and the test of Wearing Apparel Flammability 16 CFR. 1610. Color is Blue. Dimensions Small - 3 lb. L: 15-20" x W: 30" Medium - 4 lb. L: 17-22" x W: 34" Large - 6 lb. L: 19-24" x W: 39"