[thailand origin core is required to contact customer service] recommended thickness 5cm with inner jacket [85d soft and comfortable] 7.5cm thick with inner jacket [85d soft and comfortable] 10cm thick with inner jacket [85d soft and comfortable] 12cm thick with inner jacket [85d soft comfortable] thick 15cm with inner jacket [85d soft and comfortable] thick 18cm with inner jacket [85d soft and comfortable] thick 5cm with inner jacket only [85d soft and comfortable] thick 5cm with inner jacket [95d hardness upgrade] hot selling thickness 7.5cm with inner jacket jacket [95d hardness upgrade] hot-selling thick 10cm with inner jacket [95d hardness upgrade] hot-selling thick 15cm with inner jacket [95d hardness upgrade] hot-selling thick 20cm with inner jacket [85d soft and comfortable] thick 20cm with inner jacket [95d hardness] upgrade] hot selling thick 3cm with inner jacket [85d soft and comfortable] thick 3cm only with inner jacket [85d soft and comfortable]