Sleeping pads, which are just cushioned pads, can be used in conjunction with a sleeping bag to provide extra comfort and insulation, but can also be used on their own as a bed.
睡垫就是缓冲垫，可以和睡袋一起使用，增加舒适度和绝缘感，不过也可以单独作为床来使用。
Sleeping pad
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Sleeping pad
In camping, a ground pad, sleeping pad, sleeping mat, roll mat, or iso mat is a simple device often used in conjunction with a sleeping bag. Its purpose is to provide padding and thermal insulation. All types currently available use air as their primary form of insulation.
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