Hemel Air League Altitude Strap — Ballistic Nylon, 20mm & 22mm
$129.99
100% AuthenticSourced through verified partners - new & boxed with documentation.
Warranty includedFull warranty on every timepiece we ship.
Tracked deliveryTracked delivery within the US, set by each brand.
ConciergePersonal help choosing the right piece.
The watch
About this watch
The Altitude Strap, built for Hemel's Air Support hand-wound chronographs and any watch on 20mm or 22mm lugs. Abrasion- and tear-resistant ballistic nylon, ultrasonic laser-welded edges for a clean finish, and signed 316L stainless hardware with Hemel's logo buckle.
Add some variety to your rotation. Strap only — watch not included. New, boxed and warrantied — free US shipping.
Good to know
Questions & answers
What is the Air League Altitude Strap made of?
It is crafted from durable ballistic nylon with secure hardware, built to take daily wear while staying comfortable and lightweight on the wrist.
What widths does the Hemel Air League Altitude Strap come in?
The Altitude Strap is offered in 20mm and 22mm lug widths to fit a range of watch cases.
How do I install the Hemel Air League Altitude Strap?
The strap threads onto standard spring bars. A strap tool makes swapping quick and safe, though it can be fitted by hand with a little care.
Is the Hemel Air League Altitude Strap authentic, and what warranty is included?
Yes. This Hemel accessory is sourced through Shopify Collective and Hemel's verified channel, so it ships brand-new and backed by a 2-year limited warranty. US orders include free insured shipping.
How is this watch shipped, and can I return it?
Free US shipping · faster options at checkout
. Orders ship within the US and are processed within 1–3 business days. Unworn watches can be returned within 30 days of delivery with a free US return label — see Shipping and Returns.
Picked up the 22mm size to give an older sport watch a fresh weekend look. The matte texture of the ballistic nylon looks great in natural light and feels light on my wrist during Saturday errands. Good value for thirty bucks.
Edward Perez·Bethesda, MD, US··22 mm
CSReply from ChronoSeasons
Thank you, Edward! Nothing beats a fresh nylon strap to bring an older watch back into weekend rotation.
★★★★★★★★★★Verified purchase
Heavy Duty Weave
As someone with a larger wrist who collects military chronographs and field watches, I'm picky about strap length and hardware thickness. This 20mm Air League Altitude strap has plenty of tail length for a larger wrist, clean heat-sealed sizing holes, and stout stitch work around the brushed buckle. The thick ballistic nylon takes a couple days of wrist time to break in and lose its initial stiffness, but it supports a heavy steel case.
Harold G.·Naperville, IL, US··20 mm
CSReply from ChronoSeasons
Appreciate the review, Harold! Glad the length and heavy weave work well on a larger wrist.
★★★★★★★★★★Verified purchase
Water Ready Nylon
Mounted the 22mm Altitude strap on my beater diver for lake weekends and kayaking up here in Minnesota. The thick ballistic nylon shrugs off lake water, dries out fast in the sun, and the heavy steel buckle and stitched keepers feel completely secure when paddling.
Jesse Rose·St. Paul, MN, US··22 mm
★★★★★★★★★★Verified purchase
Great summer strap for the jobsite
This 20mm ballistic nylon strap is ideal for hot days inspecting sites when leather gets soaked with sweat. Washes clean under the sink and dries fast. Shipping carrier delayed the padded mailer by two days, though the strap itself is great.
Patrick·Sarasota, FL, US··20 mm
★★★★★★★★★★Verified purchase
Nice add-on for my son's gift
Bought the 22mm ballistic nylon strap to include alongside a dive watch I gave my son for his college graduation. He immediately swapped it on for his summer trip. Only My only minor gripe is that the buckle tongue takes a firm push through the heat-sealed holes at first.
Roger Medina·San Antonio, TX, US··22 mm
★★★★★★★★★★Verified purchase
Solid 20mm Strap
Ordered the 20mm Altitude strap to replace a worn leather band for Florida humidity. It feels super comfortable out to dinner or walking the dog. Getting my old thick spring bars threaded through the tight nylon channel took 15 minutes of patience, but once mounted it is rock solid.
Robert W.·Fort Lauderdale, FL, US··20 mm
CSReply from ChronoSeasons
Glad the strap is holding up great in the Florida heat, Robert! The spring-bar channels are sewn snug to prevent case wobble.
★★★★★★★★★★Verified purchase
Dresses down a steel chrono nicely
Put this 22mm ballistic nylon strap on my larger pilot watch for casual Fridays at the office and travel days through O'Hare. It lies flat enough to clear a button-down cuff without catching, and the matte hardware keeps the whole look understated and clean.
Gerald H.·Carmel, IN, US··22 mm
★★★★★★★★★★Verified purchase
Good 20mm Everyday Nylon
Grabbed the 20mm version to swap onto my daily field watch for summer weekends. The nylon weave looks cleaner in person than on the website and breathes well in warm weather. The edges were slightly stiff for the first two days before conforming to my wrist.
Chase R.·Spokane, WA, US··20 mm
★★★★★★★★★★Verified purchase
Tough 22mm nylon for flight watches
Bought the 22mm Altitude strap to mount on my vintage-style GMT flieger. The military ballistic nylon feels rugged and secure, and the steel buckle hardware matches brushed pilot cases well. The keeper loop was a touch snug to thread the tail through on day one, though it softened up after a few wears.
Gabriel C.·Baton Rouge, LA, US··22 mm
CSReply from ChronoSeasons
Thanks for the support, Gabriel! That heavy ballistic nylon starts out stiff to keep its shape, and we're glad it broke in nicely for your flieger.
★★★★★★★★★★Verified purchase
20mm Ballistic Nylon Altitude Strap
I picked up the 20mm Hemel Air League Altitude strap to pair with my 40mm ST19 pilot chronograph, and the weave density on this ballistic nylon is much tighter than standard generic NATOs. The heavy-duty stitching around the keeper loops and brushed steel buckle hardware hold the case flat on my wrist without adding excess bulk under the caseback. No fraying around the sizing holes after three weeks of daily wear.
Dennis F.·Greenville, SC, US··20 mm
CSReply from ChronoSeasons
Thanks for the detailed breakdown, Dennis! We spec'd that heavy ballistic nylon weave and reinforced stitching specifically to keep top-heavy chronographs seated flat.