<from left to right>
S size, M size, Med-light weight, XL size
Use these shuttles with appropriately-sized bobbins.
<Length x Width x Depth>
S size =24cm x 3.5cm x 2cm
M size & Med-light = 34cm x 4cm x 3cm
XL size = 41.5cm x 5cm x 3.6cm
The weight of the Medium light weight shuttle is about 95g, which is about 70% of the weight of the regular M size shuttle.
The weight of the XL size shuttle is about 140g, which is almost the same as the weight of the regular M size shuttle, while you can put about 2.5 times more weft threads into the XL size shuttle, using the appropriately-sized bobbins.