LI-NING Bolt Xtreme Nylon Shuttle - Yellow  (Slow, 75, Pack of 6)

Here's one thing about this one, it is very very close to mavis 350 and it's about more durable like bolt xtreme can last upto 6 matches(21 points) then it loses a bit of performance but still playable. On the other hand mavis 350 can also last upto 6 matches(21 points) but after that that shuttle is unplayable.
Yes bolt xtreme has a good durability but if you happen to press hard or step on it, it will have a triangle shape which changes a bit of speed.

This shuttle is almost equivalent to mavis 350 ,
Mavis 350 can last max upto 3-4 match
Bolt xtreme can last upto 6-7 match
And mavis is unplayable after some matches , but lining is manageable and can be used as practice.

Slow is what the company claims, but the shuttle is not slow at all.. We bought this with a preview to switch over from mavis 350.. but it's completely illogical to compare with..