They have double layer wind-resistant shell and binding, feature 100% Polyester Thermolite for great insulation and they are adjustable in case you have a huge noggin.
它有双层防风罩和固定绑带，100%保暖涤纶，绝对保温！ 并且头大的话，耳罩可以调整。
The walls contain polystyrene and fiberglass thermal insulation and are sealed externally with white glass. The internal surface is a double layer of plasterboard.
墙体包含聚苯乙烯和玻璃纤维的热隔离，并且在外部空间使用白色玻璃封闭起来。内部表层是一个双侧的石膏板。
The economical model of pipeline insulation is divided into single layer structure and double layer structure types.
保温管道的经济模型分为单层结构和双层结构两种。
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