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Alex, the founder of British strapmaker Haveston, is fueled by a passion for horology and history. Throughout Haveston's varied and growing portfolio, its designs are defined by a focus on the honest utilitarian character of vintage military industrial equipment used by service personnel for aviation, space exploration, combat and other purposes.
Part of the Service series of nylon straps and an original Haveston pattern design, Fortress B is based on the 1940 USAAF Spec. 24114 aircraft camouflage scheme (olive drab, grey and orange yellow) used in the European theater of WWII.
The A2 version features a single-pass layout for a streamlined wearing profile and reduced "off-wrist" height. The sliding keeper allows easy and secure stowing of the tail.
Thickness: approx. 1.3mm
Edges: Raw
Stitching: Green
Sheen: Matte
Buckle: Available in brushed stainless steel or polished stainless steel (see options)
Spring bars: Standard (free pair included)
The Service Series uses a refined one-piece layout with Haveston's secondary floating keeper that manages excess length without requiring a full fold-back.
Compared to canvas, the nylon construction wears slightly flatter and lighter, keeping the watch closer to the wrist. Fit remains adjustable and forgiving, favoring controlled, low-profile wear rather than added structure or thickness.
Length & wrist size:
Fits wrists approx. 6.0–8.5in
20mm strap width fits:
22mm strap width fits:
Water resistant, suitable for brief exposure but not intended for swimming or prolonged contact with water.
Clean with a damp cloth as needed. For heavier soiling, hand wash with lukewarm water and a small amount of mild soap. Rinse thoroughly to remove residue. After exposure to saltwater or chlorine, rinse with fresh water. Avoid prolonged water immersion, machine washing, or high heat. Allow the strap to air dry completely at room temperature before wearing.
Haveston is a British strap maker focused on utilitarian watch straps inspired by vintage military and industrial equipment. The brand’s range includes single-pass designs, hook-and-loop configurations, and two-piece straps with quick-release spring bars, with an emphasis on durability and practical construction.
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Unused items may be returned or exchanged within 60 days of purchase.
Please contact us before sending an exchange.
For full return details and instructions, see our Returns Policy.
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Independent watch strap specialist since 2007