Silicone or foam fly boxes

Aventik 100% Waterproof Fly Box Silicone Pad Foam Transparent Fishing Box Fishing Storage - AliExpress

Slimline Uni Fly Box – Snowbee USA

DIY Slit Foam Fly Boxes The North American Fly Fishing Forum - sponsored by Thomas Turner

High-density silicone foam provides the ultimate grip for all flies and will not damage with repeated hook insertion and removal.

Snowbee Easy-Vue Silicone Foam Fly Box - L

Overview: The TFO single-sided clear fly box has an easy to open latch for one-handed operation. Unique triangle cuts allow flies to slide into the

TFO S/S Waterproof Olive Fly Box -Triangle Slit Foam

Snowbee Slimline Silicone Foam Fly Box - Small, Fly Boxes

Fulling Mill Clear Silicone Foam Fly Boxes - Fulling Mill Blog

Umpqua UPG Silicone Waterproof Walkabout Large Fly Box – charliesflybox

Silicon fly box

Teton Tenkara: Tacky Fly Box

These durable silicone and waterproof fly boxes take up very little space than most conventional boxes.

Slim Silicone Box

Fly Boxes - FlyFinz

Silicone Triangular Slit Foam Fly Box

Airflo Grippa Silicone Fly Box - Keen's Tackle and Guns