Leather Strap, Flat Black – compatible with Cartier Santos Medium/Large

Name: Leather Strap, Flat Black – compatible with Cartier Santos Medium/Large
Brand: Lugline
SKU: LLN-32606-001
Price: 82.0 USD
Availability: InStock

$82.00 In stock

US shipping $5.99, free on orders of $40+ · dispatched in 1–3 business days · delivered in about 7 business days after dispatch
30-day returns on unworn straps in original packaging
Made for the models listed under Details · straps only, watch not included

Swap it yourself Spring Bar Tool – fork and pin tips, for strap changes $13.00

Details

Refine your Cartier Santos with this timeless flat black leather strap by Lugline — a sleek, minimalist upgrade that complements any style. Crafted from genuine leather, the matte black finish adds a bold yet understated elegance, making it ideal for both formal occasions and everyday wear. Designed for a precise fit, this strap features a built-in Quick Switch mechanism for fast, tool-free changes. Its smooth texture and soft feel ensure lasting comfort on the wrist, while the classic color offers maximum versatility for any watch collection.

Fits

Model: Cartier Santos Medium/Large
Lug width: 19 / 21 mm
End: integrated, shaped to fit onto the case of the listed models

Specifications

Material: Genuine Leather
Size: 120mm + 75mm
Color: Flat Black
Buckle options: No Buckle, Silver, Gold, Rose Gold

In the box

One Leather Strap with the selected buckle

Brand and model names are used only to describe compatibility. Lugline is an independent brand and is not affiliated with, endorsed by or sponsored by any watch manufacturer. Watch not included.

Fit & size check

Integrated end. Shaped to fit onto the case of the listed model, and used with the folding clasp from your current bracelet.
Choose your size by bracelet links. Count the removable links on each side of the clasp (for example 4 by 6) and pick the matching size. How to count links
Check your model before ordering. Make sure your watch is among the models listed under Details. Not listed? Try the Strap Finder or request a model.

Full size guide →

Shipping

Ships within 1–3 business days. United States: tracked standard shipping $5.99, free on orders of $40 or more, estimated delivery about 7 business days after dispatch (5–9 business days). Import duties, if any, are collected by the carrier before delivery.

Returns

30-day returns on unworn straps in original packaging. Return shipping is paid by the customer unless the item arrived damaged or incorrect. Refunds go back to the original payment method within 5 business days of receipt. Refund policy

SIZE GUIDE

1. How to measure lug width

Lug width is the inside distance between the two lugs of the watch case, where the strap is attached. It is always given in millimetres.

Remove the current strap, or measure with it fitted if the ends are visible.
Place a ruler or calipers between the inner faces of the lugs, level with the spring bar.
Read the value to the nearest millimetre. Most watches measure 18, 19, 20, 21, 22 or 24 mm.

Not sure? Look up your reference number with the Strap Finder. A strap that is 1 mm too narrow leaves a visible gap; a strap that is too wide will not fit.

18 mm 19 mm 20 mm 21 mm 22 mm 23 mm 24 mm

2. Wrist size: short or long strap

Wrap a soft tape (or a strip of paper) around your wrist where you wear your watch and note the circumference. Then choose the strap length:

Wrist circumference	Strap length	Typical split (long / short side)
14 – 16.5 cm (5.5 – 6.5 in)	Short / Small	approx. 105 / 70 mm
16.5 – 19.5 cm (6.5 – 7.7 in)	Regular / Medium	approx. 115 / 75 mm
19.5 – 22 cm (7.7 – 8.7 in)	Long / Large	approx. 120 / 75 mm

Lengths vary by strap; the exact sizes are shown on each product page. Cut-to-size straps are trimmed to your wrist at home.

3. Integrated straps: counting bracelet links

Integrated straps re-use the folding clasp from your current bracelet. The size is set by how many removable links your bracelet has on each side of the clasp.

Hold the bracelet with the clasp at the bottom.
Count the removable links (those held by a screw or pin) between the clasp and the case, on the 6 o'clock side and the 12 o'clock side.
Write it as “6 o'clock by 12 o'clock”, for example 4 by 6, and pick the size with the same numbers.

Links on your bracelet	Choose
4 by 4	X-Small / Small
4 by 5 or 4 by 6	Small / Medium
5 by 5 or 5 by 6	Medium / Large
6 by 6	Large / X-Large

Jubilee bracelets use different link counts; the matching sizes are listed on each Jubilee product page.

4. Smartwatches

Apple Watch: 38 / 40 / 41 mm and 42 mm (Series 10 and later) share one band size; 42 mm (Series 1–3) / 44 / 45 / 46 / 49 mm share the other.
Samsung Galaxy Watch4 – Watch7: 20 mm quick-release bands.
Garmin QuickFit: 20, 22 or 26 mm, not interchangeable with standard quick-release bands.

Open the full size guide

Made for the Cartier Santos Medium/Large

An integrated end that takes the place of the bracelet's end-links and follows the case shape of the Cartier Santos Medium/Large, so it looks like it came with the watch. Lug width 19 mm / 21 mm. The exact models it fits are listed under Details.

Leather that breaks in, not down

Leather softens and takes on character with wear. Keep it out of the water, wipe it with a dry cloth, and let the patina build.

Swapped in minutes, dispatched in 1–3 business days

Fitting uses the same hardware as the original bracelet. If you would rather not do it yourself, any watchmaker will do it while you wait.

US shipping is $5.99 and free from $40. Orders are dispatched in 1–3 business days and typically arrive about 7 business days after dispatch. Unworn straps can be returned within 30 days.