The size is very convenient for travel, z. B. to take them to sports.
Until now we had no problems when washing with warm water and detergent. For boiling water or a dishwasher, these bottles - as indicated - but not suitable.
Too bad that you can not make a color selection currently. We were lucky - with a blue bottle we can live well. Practical it would be if you could order for specific colors. Currently, there are the variants blue, green, orange, red and pink in circulation.