Rainbows, yes, but also MOONbows! The conditions have to be just right so you'll have to be pretty lucky. A friend of mine has spent most of his life here and has only seen 3 of them. But 3! They do exist. It makes scientific sense, I've just never thought of it before.
A friend of mine in Monteverde, Costa Rica just saw one the other night! She said it was a windy night with a full moon. Incredible!
Seeing a moonbow (also known as a moon rainbow or lunar rainbow) are the same as a regular solar rainbow, but using moonlight instead of sunlight refracting off water in the air.
For the conditions to be right, you need a full (or almost full) moon, water droplets in the air (Monteverde is commonly misty), the moon a low angle across from the mist/rain, a dark sky (little light pollution),
They have been known to be seen in:
Cumberland Falls, Kentucky - famous for regular moonbows
Yosemite Falls, California - especially in spring with heavy snowmelt
Victoria Falls (Zambia/Zimbabwe), Hawaii, Costa Rica - it's rare, but they've been experienced in these locations, too.
The Friendly Swede Partial Zip Travel Sheet
This travel sheet comes in polyester (ultralight) or microfiber depending on what type of feel you want. It DOES NOT fit my criteria of having an all-around zipper, but it does have a full-length zipper. 41" wide, 47" wide XL
CON: The pillow pocket is in front. Not full zip.
PRO: Zips from inside or outside of the bag. It gets good reviews, comes in regular or XL, packs down pretty small, and weighs in at only 9.17oz. Good for an inexpensive travel sheet.