003 // What Is a Sack Jacket?
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The sack jacket has always interested me because it sits slightly outside the usual idea of tailoring.
Its roots are closely tied to American Ivy League style, particularly the natural shouldered, softly constructed jackets associated with East Coast collegiate dressing in the middle of the twentieth century. The appeal was always in the lack of fuss. A straighter body, little suppression through the waist, natural shoulders and an ease that made the jacket feel less formal than traditional British tailoring.
That informality was the part I wanted to keep.
Two Tailoring Traditions
For the Supermoon Sack Jacket, I started with that Ivy League idea of a relaxed, unfussy tailored shape, but I didn’t want to reproduce it literally. I wanted to bring in another tailoring reference that I’ve always loved: the Neapolitan shirt shoulder, or spalla camicia.
Traditionally, spalla camicia is a very soft way of setting the sleeve into the armhole, borrowed from shirtmaking rather than rigid tailoring. It creates a softer shoulder line, with the sleeve sitting naturally rather than being built up with structure and padding.
Mixing those two ideas felt right for Supermoon.
The Ivy League sack jacket gives the garment its relaxed proportion and straightforward attitude, while the Neapolitan shoulder softens it further and removes some of the stiffness people often associate with tailoring.
Giving Tailoring an Outerwear Feel
Fabric was just as important.
I chose a heavy wool blend rather than a lighter suiting cloth because I wanted the jacket to sit somewhere between tailoring and outerwear. The weight gives it more presence, makes it practical through colder months and stops it feeling too formal. It can be worn like a jacket rather than something that needs to be treated as part of a suit.
Connecting It Back to Edition 01
The check also became a way of tying the jacket back into the rest of Edition 01.
Within the cloth there are subtle references to colours used elsewhere in the collection. The warmer yellow tones pick up the Arrowwood yellow of the Field Parka, while the blue connects back to the Joiner’s Jacket.
They’re not obvious matches, and they weren’t intended to be.
I wanted the collection to feel connected without looking coordinated in an overly deliberate way. The colours sit quietly within the check so that pieces can work together naturally while still standing on their own.
Inside the Jacket
I wanted the inside to have the same sense of ease as the outside.
The sleeves are finished with a traditional striped jacquard lining and a working surgeon’s cuff, which I often like to fold back when I wear it so that a glimpse of the stripe becomes part of the look.
For the body I chose cotton rather than a more formal conventional lining. I love the handle of it and the way it changes the feel of the jacket. It makes the piece feel softer and more relaxed, which suits the way I wanted the Sack Jacket to be worn.
The contrast corduroy internal pocket felt like a natural place to add the Supermoon brand label. It is a small detail, but one that gives the inside of the jacket its own identity without making it feel overdesigned.
The Supermoon Interpretation
That is really how I think about the Sack Jacket.
It begins with recognisable tailoring references, but it isn’t about reproducing either American Ivy League dressing or Neapolitan tailoring faithfully. It is about taking the parts I like from both, changing the weight and proportion, and making something that feels appropriate for the way Supermoon is intended to be worn.
Tailoring, but with the ease of outerwear.
Supermoon / / Edition 01