Translations:AY Honors/Ultralight Backpacking/Answer Key/86/en

Here are some types of ultralight pillows that are popular among climbers:

1. Inflatable pillows: These pillows are very light and can be compressed to a very small size when not in use.
2. Folding pillows: Made from foam material that can be folded or rolled, these pillows are slightly heavier than inflatable pillows but provide better comfort.
3. Down pillows: Filled with down, these pillows offer maximum comfort and good insulation, but are usually heavier and more expensive.
4. Hybrid pillow: Combining inflatable material with a soft top layer, this pillow offers a balance between comfort and weight.
5. Microfiber pillows: Light and comfortable, these pillows are often cheaper and easier to clean, but may not be as compressive as inflatable pillows.