All Products

The Spider Socks are a super elastic neoprene sock. Waterproof, warm and comfortable. Reinforced seams. The Spider Socks are a super elastic neopr...

The MB project objective has been to renovate our medium-high range of fins featuring carbon fiber blades. At C4, the 200 series fins are consider...

Available in 20”, 28”, 4’, 5’, and 6’ lengths. 1/2” diameter with 6mm threaded end, 3/8” high-quality black latex band Available in 20”, 28”, 4’, ...

Aloe and Green Tea speed skin restoration Powerful blend of essential oils and enzymes quickly cools skin for fast relief of sunburned and stresse...

Our Best-selling professional-strength formular is now available in a spray! Our Mask Defog quickly and effectively prevents fogging for a crystal...

Keratin and Panthenol help prevent hair breakage UV absorbent to protect hair color from the sun while improving elasticity Lightly detangling, le...

All Inclusive Kit Includes: Bottleneck Style Ankle Seal, Heat Tape, Cleaner, Abrasive Material, Gloves (for use with cleaner), AquaSeal and Harden...

All Inclusive Kit Includes: Cone Style Wrist Seal, Heat Tape, Cleaner, Abrasive Material, Gloves (for use with cleaner), AquaSeal and Hardener wit...

All Inclusive Kit Includes: Bottleneck Wrist Seal, Heat Tape, Cleaner, Abrasive Material, Gloves (for use with cleaner), AquaSeal and Hardener wit...

All Inclusive Kit Includes: Bellows Neck Seal, Neck Template, Heat Tape, Cleaner, Abrasive Material, Gloves (for use with cleaner), AquaSeal and H...

The new UP fins featuring technopolymer blades and 250 foot pockets are the result of the close collaboration between Umberto and C4. The Technopo...

The underwater slate is blank on both sides Comes with tethered pencil Measures 4½ x 7¾” The underwater slate is blank on both sides and comes tet...

The 58-page tabbed insert pack includes site maps, dive logs, equipment checklist, and dive buddy directory. The 58-page tabbed insert pack includ...

Minimally exposed Integrated shaft guide reduces drag and friction and assures accurate shot even when it is instinctive. New laser cut stainless ...

The bottles are 600ml seamless stainless steel, with easy to use stem/straw top. Each measures 9-3/8 x 3” diameter & weighs 0.47 lbs The bottl...

Remove fins and clip them to your BCD before getting in the boat! Available in single loop (both fins on one loop) or dual loop model. Remove fins...

Super elastic neoprene gloves Super elastic neoprene gloves

Easy grip pencil with solid, replaceable lead cores makes these slates easy to use! Available in traditional or multi-page model. SL1560 slate mea...

Dual hardness footpocket Interchangeable blades Available in 6 sizes Can be upgraded to carbon Long fins for freediving and spearfishing. The new ...