Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
the product information doesn't say which company makes these - based on the price, i just assume that it is a aftermarket product. I was therefore delightedly surprised to find out that these are actually made by CamelBak!
no problem fitting to my pack. the material is slightly thinner than the original blue ones, but hey, for less than half the price, not mentioning now i have got 4 new colors to play.
Australian Post's delivery service is subpar. In fact the guy didn't bother to ring the door bell, just decided to assume that nobody's home, and leave a note in the mailbox instead. i then had to queue for half an hour at the post office to retrieve it.