It sounds like you’re describing a compact Orvis fly reel case with approximate dimensions of 9cm (height) x 9cm (width) x 5.5cm (depth). This size suggests it’s designed for smaller fly reels, possibly for freshwater or light saltwater use.

ORVIS FLY REEL CASE APPROXIMATELY 9CM IN HEIGHT AND WIDTH, ABOUT 5.5CM IN DEPTH.

Possible Model:
Orvis offers various reel cases, but this could be:
– Orvis Compact Reel Case (fits Battenkill, CFO, or other mid-arbor reels).
– A travel-sized case for protecting reels in storage or transport.

Confirmation Tips:
1. Check for Orvis branding – Look for logos or labels inside/outside the case.
2. Material – Orvis cases are often made of durable nylon or Cordura with padded interiors.
3. Closure – Many have zippers or Velcro flaps.

If you need an exact match, you might:
– Search Orvis’s website or contact their customer service with dimensions.
– Compare to third-party sellers (e.g., eBay, Amazon) using the specs you provided.

Would you like help finding a replacement or confirming compatibility with a specific reel?