Due to the unique shape of the memobottle it is not suitable for carbonated liquids. The pressure created from carbonation can cause the bottle to expand. The pressure is dispersed evenly with cylindrical bottles, however due to the slim shape of the memobottle this means it may damage/alter the shape.
The A7 and Slim are rated up to 100 degrees celsius, so can hold hot drinks. The A5 and the A6 are rated up to 50 degrees celsius so are not recommended for use with hot liquids. For coffee or other strong staining liquids we advise to wash out the bottles more frequently to avoid staining.