Answer: A: One. Advantages of latex pillow: 1. Natural and environmental protection, pollution-free 2. Non toxic, anti mite, antibacterial, and anti allergic 3. Latex pillow can effectively improve cervical vertebra, lumbar vertebra, and lower blood pressure 4. Strong elasticity, 5. Designed according to ergonomic principles, it can effectively promote sleep 6. Latex pillow can effectively reduce snoring, suitable for asthma patients 7. Latex pillow can effectively reduce the static electricity generated between human body and fiber 8. Honeycomb structure, It has good air permeability and can quickly emit the heat generated by the human body. How to identify latex pillows: Smell: natural latex pillows will emit a faint smell of frankincense (this smell is the smell of latex pillows), which is non-toxic and harmless, and is a feature that other pillows do not have). Look: Latex pillows have thousands of honeycomb pores, which hold more air than other fibers. These holes can discharge the waste heat and moisture discharged by the human body, promote natural ventilation, provide the best natural air conditioning system, and keep the air in the pillow fresh and healthy. Stay comfortable every season. In summer, you can deeply feel its refreshing and comfortable feeling. Anti mite, anti-bacterial, and allergy prevention. Latex itself has the efficacy of bacteria prevention and dust prevention, which can prevent bacteria from breeding, and prevent skin and nose allergy. Touch: feel comfortable, as soft as baby skin; It is normal for sweaty hands to touch latex pillows and make latex yellow. Pressing: The latex pillow will bounce quickly when pressed down by hand. III. Cleaning method of latex pillow: it can be washed with water: the most convenient thing for latex pillow is that it can be washed with water. The natural latex pillow is easy to be cleaned manually (generally not required, just tap it gently). As long as it is dried with an electric fan or oven at low temperature after dehydration, it will not deform, and is easy to maintain, fold, and collect. It is the most comfortable choice for pursuing healthy sleep. When cleaning, it must be washed by hand, and cannot be put into the washing machine or other machinery and equipment for washing, because it will be broken. When hand washing, try to squeeze. Since a large amount of water will be absorbed during cleaning, the weight will be doubled, and you should try to move in the water. When taking out the water surface, it is not allowed to grab a small corner and pull it up, because the pillow will break if it is too heavy. When cleaning, it must be like tofu, holding the center of gravity (central part) and most of the volume, and carefully taking out the water surface. After washing, use a dry towel or other materials that will absorb water and press dry with both hands to avoid direct exposure to strong sunlight. If you want to speed up the drying time, it is recommended to squeeze the lower part by hand every 2-3 hours after hanging, then drain the excess water and blow it with an electric fan. If it is only a small area, just wipe it with a wet towel and put it in a ventilated place. It can be used again after a few days. Sweating: The latex product itself will volatilize water, so there is no need to air it.