NAME_1, an attractive young woman is wandering the woods at night, alone. She's cold and wet and in need of shelter. She comes upon a clearing with a hut in it. When she knocks, two average looking guys open the door and welcome her inside. The brothers NAME_2 and NAME_3 live there alone. They notice NAME_4's situation and suggest warming her with their bodies under the blanket, she happily accepts. They do it in the nude for better heat transfer. NAME_2 lies in front of NAME_4, facing her. NAME_3 is behind her, also facing her. She's being caressed and she's feeling their excitement pressing into her. She gasps when the guys make her "airtight".
Flesh out the story from the perspective of NAME_4. Make it extra smutty and hot, at least 10 paragraphs of pure filth. Main focus is on double penetration.