1970s | Thermic Bay | Insulated Zip-Front Jacket – XXL

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Description:

Item:
1970s Thermic Bay zip-front jacket with a clean, utilitarian outdoor silhouette. Features a structured collar, chest pocket with button closure, and large hand-warmer pockets at the waist. The cut is boxy through the body with a straight, practical fit typical of 1970s cold-weather leisurewear, designed to layer comfortably without bulk.

Era:
1970s

Brand:
Thermic Bay

Condition:
Very good vintage condition. Light creasing and surface wear consistent with age and use, with no major faults noted. The structure remains sound and the jacket presents well overall. Honest wear that adds character rather than detracts.

Provenance Note:
Thermic Bay specialised in practical insulated jackets during the 1970s, aimed at everyday outdoor use rather than overt fashion. This piece reflects that era’s focus on function, warmth and durability, with a straightforward design that has aged well. A solid, wearable vintage jacket that sits comfortably between workwear and casual outdoor styling, offering genuine period authenticity without being overly technical or fussy.

Measurements:

Size on garment: N/A

Our modern sizing estimate: XXL                                                                                                        

Shoulder to shoulder: 20"

Pit to pit: 24"

Inner sleeve to cuff: 19"

Under collar to lower back: 30"

Condition Notes:

Please be aware. All our true vintage items come with a history, and minor signs of age, wear, or character should be expected. Any notable marks, damage, or repairs will always be clearly mentioned. This natural wear is part of what gives genuine vintage its individuality and authenticity. True vintage should not be confused with modern second-hand clothing

We photograph all garments using a professional, studio-grade imaging system designed to show colour, texture, and shape as accurately as possible. This setup was built specifically to give a true representation of each piece and avoid misleading presentation, however, we do not take photos of inside the garment. While we take great care in inspecting every piece, with true vintage it is always possible that a minor detail may be missed.

Sizing Notes:

Please compare these measurements to a similar item you already own, laid flat (rather than measuring your body). Start with pit-to-pit (chest), then check length. Vintage pieces can be cut boxier and shorter than modern equivalents, so the measurements listed are the best guide to fit.

Our modern sizing estimates are based on chest measurements using the following tee / shirt sizing scale:

31–34″ = XXS
35–36″ = XS
37–38″ = S
39–40″ = M
41–42″ = L
43–44″ = XL
45–46″ = XXL
47–48″ = 3XL

For jackets, knitwear, and padded outerwear, we grade one size down from the tee scale to allow for structure, lining, and bulk.

Buying true vintage clothing:

When buying true vintage clothing, you are buying a piece of clothing as an investment. We believe most of our true vintage items will hold or increase in value in years to come. We hope you will cherish your purchase.

Returns:

We are an independent micro business, and while we are always happy to accept returns within the timeframes below, return postage costs are the responsibility of the buyer.

We accept returns within 14 days of delivery for UK orders and within 30 days for Europe and International orders. Items must be returned to us within these periods. This means the returns must be back with us within those 14 days in the UK and within 30 days for Europe and International items.

Please see our returns policy page for full details.