Here's a full presentation of the LOTUS mouthpieces, from the XL cup to the XS cup.
https://www.lotustrumpets.com/store
00:00 - LOTUS Mouthpiece Presentation
02:08 - Sizing
03:24 - Amy McCabe (XL)
03:57 - Simone Abeni & Derrick Gardner (XL2)
05:05 - Huw Morgan (1XL)
06:56 - Jon Lampley (2L2)
08:01 - Adam Rapa (2M in Nickel)
08:47 - Adam Rapa (XL2)
09:33 - Ashlin Parker (3M in Nickel)
10:51 - Material
16:36 - Adam Rapa (S)
17:05 - Patrick Bailly & Alain Cazcarra (7XS in Brass)
17:26 - How many should I buy? :)
Enjoy!
https://www.lotustrumpets.com/store