super coarse filter with potential for improvement

The following points lead to deduction of points:
1. The filter is with 70g total weight unnecessarily heavy (wall thickness of approximately 2 mm!) And not flexible enough.
2. The two funnel-parts can be joined too heavy. With cold hands is possibly the. not possible anymore.
3. The funnel tip is in outside diameter slightly too large (around 1-2mm), thus they no longer fit into any (PET) bottle with about 2cm in diameter!

Conclusion:
If the manufacturer reduces the wall thickness, improves the coupling of the funnels and rejuvenates the former tip, then true (up to about 15 euros with too high a price) everything: weight, handling and "fits all." Then there will be 5 star.

Let's hope for a corresponding version 2.0.