a package of comfort and the best protection for children . the anon windham wavecel helmet combines the revolutionary wavecel protection with the dual hybrid construction of a robust endura® shell on the outside and a feather-light in-mold construction on the inside.constructionwavecel is a compressible cellular structure that lines the inside of the helmet and is capable of mitigating impact and rotational forces by flexing, reducing impact velocity by compression and dissipating energy away from the head by displacement. the polartec® power grid® fleece lining and ear pads provide quick drying and warmth for all day comfort.50/50 hybrid shell construction combines endura® shell and in-mold shell for durability against wear and for featherweight performancefit systemin-shell 360° boa® adjustment system with adjustment dials just below the helmet shell for micro adjustments, while the fidlock® buckle with magnetic push button closure can be easily opened or closed with one hand. even with gloves.safety standardce 1077b, astm 2040