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.
So, I call my work laptop "Louie". Louie likes to come home sometimes (he's a bit of a stalker really). When he comes home he needs a "sleeping bag" (sorry Louie I'm not sharing my bed you with lol). Louie's sleeping bag is great...he's comfy in there, he doesn't get cold because he's all snug as a bug in a rug. Sometimes Louie will bring friends home with him; notebooks, documents, his charger and another bits and bods he might need, so luckily, Louie's sleeping bag has enough room for everyone! Louie loves the cat chain because of the sound it makes when he's travelling - he's knows he's going for a sleepover. Louie just loves his sleeping bag as do I (his best mate and walking stick...well not a stick more like a bouncy ball).