這就是第二個橡膠睡袋的嘗試了！
This is the second try of rubber sleepsac!
這是一個可充氣的橡膠睡袋。
This is a rubber inflatable sleepsac.
充滿氣後，把整個人浮了起來似的，外面還可以加上橡膠束縛帶，使得束縛更緊。
After full of gas, like the entire floating on the air, and outside can add some rubber straps to tie it up more tight.
而頭部那個大洞有什麼作用？以下可供參考....
And that big hole in the head what is the use? Below for reference ....
至於這個重要的部位，還可以放置....
As this important part, you can also place ....
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