The MFC Poly Fly Box is a popular choice among fly anglers for organizing and storing flies. Here are some key details about it:

Features:
1. Material: Made from durable polypropylene plastic, which is lightweight, water-resistant, and crush-resistant.
2. Design:
– Slit Foam Inserts – Holds flies securely in place, preventing tangling.
– Clear Lid – Allows for easy visibility of contents without opening.
– Hinged Lid – Stays open while selecting flies.
– Secure Closure – Typically features a strong latch or magnetic closure to keep flies safe.
3. Sizes & Compartments:

MFC Poly Fly Box

– Available in multiple sizes (small, medium, large).
– Some models have adjustable compartments or removable dividers for customization.
4. Portability: Compact and fits easily in a vest, pack, or pocket.

Pros:
✔ Durable – Resists cracking and water damage.
✔ Great Fly Retention – Slit foam keeps hooks secure.
✔ Visibility – Clear lid helps quickly locate flies.
✔ Affordable – Priced reasonably compared to aluminum or high-end boxes.

Cons:
❌ Foam can wear out over time with heavy use.
❌ Not fully submersible (not waterproof if fully submerged).

Best For:
– Freshwater & saltwater fly fishing
– Anglers who want a balance of durability and affordability
– Organizing dry flies, nymphs, and small streamers

Alternatives:
– Cliff Outdoors Fly Boxes (higher-end foam)
– Tacky Fly Boxes (silicone inserts)
– Fishpond Tacky Fly Box (magnetic + foam hybrid)

Would you like recommendations based on a specific type of fly fishing (e.g., trout, bass, saltwater)?