Cosaro Brown Retro Leather Watch Strap

€107,44 excl. VAT

(VAT Free shopping outside the EU)


Bronze Boogy

Finished with a distinguished heat line and combined with a contrast stitching this super soft and rich bronze brown leather will turn heads on the streets. Wether you spoil your Tool or your Dress watch with it, it will elevate any look.

And with a little twist on your arm, you will recognize the cream white hand painted edges that gives the perfect Retro look. Handcrafted by Italian Artisan JPM.

Short 10,5 + 6,5 cm (4.13 + 2.56 in.)
Regular: 12 + 7,5 cm (4.72 + 2.95 in.)

Buckle size:
Lug width 20/19 mm = 16 mm buckle
The strap comes within a thickness : ~2,8 mm (0.11 in.)

Care instruction

Our leather straps are made of all-natural vegetable tanned leather. There is no chemical coating or waxing on top, which is why they are so very soft and comfortable. This natural quality also causes aging of the leather by sunlight and everyday wear. Every strap gets its own individual patina, which is something we love. Please don’t treat the leather with oil or wax as it ruins the whole nature of the strap. This also comes with a warning: avoid direct contact with water, as it may cause stains. So don’t wear your strap in the shower or when swimming and be cautious of heavy rain or perspiration. We recommend not wearing the strap in the gym.

Installation advice

We advice using a high quality spring bar for installation of our straps. Especially with newer watches, the gap between the case or bezel and the spring bar may be more narrow than on older pieces. To avoid scratches on the leather, we advise you to treat the strap carefully and without force when installing it on your watch. If it does not seem to fit at all, you might need curved spring bars or a different watch strap altogether. If you're unsure about this, feel free to consult with us before placing your order.

Seems a bit loose? Here’s why

As vegetable tanned leather tends to shrink a bit when worn, all our leather watch straps are intentionally designed with a tiny bit more width to prevent them from feeling or looking too small after some wearing. When first installed with your watch, the strap might appear a bit snug – but after a while, it will stretch and fit perfectly between the lugs. For Bulang and Sons, this is a mark of quality and proof of our traditional and natural approach.

Can’t wait to receive you package? With Bulang and Sons you don’t have to. We are located in The Netherlands and have ways of getting your order to you fast. 

Customer Reviews

Based on 5 reviews
John Holland
Great strap & service

Boulanger & Sons provides excellent products. This was my third purchase from them and all of them have been great products. I will definitely purchase from them in the future.

Great Leather Strap

Got this leather strap for my speedmaster and BB58 and it looks and feels great on both

Ryan Lo
Unique Straps

The Cosaro leather straps are very soft and comfortable. The brown colour perfectly matches the rose gold of my Richard Lange. Interestingly, the colour of the leather will slightly change based on one’s wearing habits, which will turn your straps be a pair of unique straps after wearing for a period of time.

simon brouwer
Nice color great feel

Best straps are from Bulang. The cosaro is incredible smooth en flexibel. Great tan. One point of criticism: Water.. sometimes you have to wash your hands.. and a drup of water gives a stain.

Aimen Abdel Hay

Cosaro Brown Retro Leather Watch Strap

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