Decrum — Men's Tailoring, Since 2015
Some tailoring dates the moment the trend turns; this does the opposite. A men’s black leather blazer cut clean and classic — sharp a generation ago, sharp a generation from now — in 100% real lambskin with a two-button front. It’s built to be worn, not stored: easy on the shoulders, quick to throw on, dressed up or down without effort. Trends will keep cycling; a blazer this timeless simply sits them out. Own it once and it keeps paying you back, wear after wear, year after year.
Handcrafted in Decrum’s own workshop and sold direct — maker-to-wardrobe, without the retail markup a blazer like this usually carries. We’ve built leather this way since 2015: real hide, honest construction, no faux and no shortcuts. You pay for the lambskin and the hands that shaped it, not the names in between.
100% genuine lambskin is what lets a leather blazer tailor close without going stiff. Fine and light, it follows the shoulder and moves with you rather than boxing you in — the difference between a blazer you reach for and one you leave hanging. It softens and settles the more you wear it, gaining a low sheen and an easy hand over time. This is leather that improves on the job instead of wearing out.
A tailored two-button silhouette with a standard notch lapel — structured through the shoulder, trim through the body, true to a blazer’s proportions. Six pockets earn their place: three outside and three inside, one cut for a phone, so it works as a jacket and a carryall at once. Clean lines and a defined lapel keep it firmly on the sharp side of casual.
Over a crisp shirt for the office, over a fine knit or tee for dinner — the blazer shape does the lifting in every case. Black keeps it formal-ready and quietly slimming, holding its own in any room without ever trying too hard. It’s the one layer that turns getting dressed into a decision you don’t have to think about.
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REAL LEATHER IS NATURE'S MASTERPIECE
Feels Like a Second Skin
Built To Last
A Natural By Product
Ages Beautifully
ABOUT OUR LEATHER
Our leather is a natural by-product of the food industry, nothing goes to waste.
Socially responsible production standards to ensure ethical working conditions.
The highest grades that retain natural texture, strength, and breathability.
Our leather is tanned using environmentally responsible methods, minimizing water and chemical waste without compromising softness or durability.
Real, verified reviews from Decrum customers on Trustpilot
Great product
Product as advertised - good quality, colour matches the picture. Good communication prior to shipping - asking for clarity on sizing etc. Measure yourself or have someone else measure yourself for sizing - the products are true to their size.
I was a bit sceptical of ordering…
I was a bit sceptical of ordering online but I did. Received jacket and was beautiful. It was so soft and light but the quality was exceptional. I ordered the wrong size and communication was exceptional and fast so received new jacket quickly and very happy with service. Very happy I ordered from this company 😊
Highly advanced in customer experience
Decrum is highly advanced in customer experience from initial contact to purchase exactness to delivery and follow up — an example for healthcare industry standards, surgical in one word. I'm not returning my exact-fit, great-price leather jacket.
The jacket is a beautiful color and quality!
The jacket is a beautiful color off white, very soft and thicker leather than I expected for a lambskin hide. It is comfortable and looks great! Excellent communication during the process also! Ticks all the boxes — I was hesitant at first to order a leather coat online and happy I took the risk. Great quality, and a smooth, informed process including follow up! Thank you Decrum!
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We use 100% Genuine Grain Leather, specialising in premium Lambskin and Cowhide. We do not sell faux, vegan, or PU leather. Every Decrum jacket is a natural product — breathable, durable, and designed to develop a richer character the more you wear it. If genuine leather matters to you, it matters to us too. See verified reviews from real UK customers on our Customer Reviews page.
Yes, shipping is free on all UK orders. We deliver with full tracking, with standard delivery to all UK addresses in 3-5 business days. Track your shipment anytime on our Track Your Order page.
Our jackets are designed with a modern, tailored fit. To ensure you get the right size — especially if you plan to layer over a jumper during British winters — we highly recommend checking our Size Guide. We provide exact chest measurements in inches to match UK sizing conventions. For a looser fit, always go one size up. Still unsure? Reach us via our contact page before ordering.
We offer easy returns for all UK customers. If your jacket is not the right fit, initiate your return within 30 days of delivery through our Return & Exchange page. Items must be unworn, unwashed, and have tags attached. We want every UK customer to feel completely confident in their Decrum leather — sizing up or down is no problem at all.
