The C&F Design Grand Slam Fly Box is a saltwater-ready case built around the C&F Universal System. Its wider, more robust slit-foam holds heavy salt flies securely, while the waterproof shell and strong closure protect contents from spray and sand. Designed to work in tandem with the Grand Slam Guide Boat Box, you can clip System Foam inserts in and out and move selections between boxes in seconds.

Modular system for flats-ready organisation

Choose from Bonefish, Permit or Tarpon layouts to match patterns and hook sizes. Swap inserts between this fly box, other System cases and your boat box without repacking. The result is a fast, tidy way to carry the right flies for South African estuaries and Indian Ocean flats.

Features

• Compatible with C&F Universal System Foam (clip-in/clip-out)
• Integrates with the Grand Slam Guide Boat Box for modular setups
• Wider, robust slit-foam grips saltwater hooks securely
• Waterproof, dust-resistant shell with strong closure latch
• Built for flats, skiffs and travel in harsh environments

Variant	Foam layout	Total flies
Bonefish	10 rows × 13 flies per row	130
Permit	8 rows × 13 flies per row	104
Tarpon	6 rows × 9 flies per row	54

Size	Dimensions (mm)	Notes
Small	Approx. 130 × 104 × 36	Compact clamshell for minimal setups
Medium	Approx. 155 × 105 × 40	Most versatile size for mixed foams
Large	Approx. 197 × 114 × 42	High-capacity box ideal for boat or stillwater use