Bring your best game to the course even as temperatures drop. The Callaway 1/4 Blended Merino Men's Sweater in Steel Heather is a classic-fit mid-layer built for cold-weather golf, combining the natural warmth of merino wool with the durability of acrylic in a refined, on-course-ready design. Opti-Therm thermal technology locks in body heat while remaining breathable, so you stay comfortable from the first tee to the final green. A sleek quarter-zip opening and mock neck let you quickly adjust ventilation as conditions change throughout your round.
Callaway's Opti-Therm technology is engineered to trap and retain body heat, forming a reliable insulating barrier between you and cold air on the course. The thermal layer works in tandem with the merino wool fibres to prevent heat loss without adding excessive bulk, keeping your swing unrestricted and natural. Whether you are walking the fairways on a crisp autumn morning or finishing a winter round in fading light, Opti-Therm ensures consistent warmth throughout. The result is a sweater that genuinely performs as a functional mid-layer, not just a stylish cover-up.
The fabric composition of 50% Merino Wool and 50% Acrylic has been carefully chosen to capture the best of both fibres. Merino wool is one of nature's finest insulators — its fine fibres trap warm air close to the body while simultaneously wicking moisture away from the skin, so you stay dry and comfortable even during an active round. The acrylic component adds durability, shape retention and ease of care, making the sweater more resistant to pilling and stretching than pure wool alternatives. Together, the blend is soft to the touch and sits comfortably against the skin without any itchiness.
Designed with a regular, classic cut, the sweater provides a clean silhouette that looks sharp both on and off the course. The fit is generous enough to allow a full, uninhibited golf swing — no bunching at the shoulders or restriction across the back. The ribbed cuffs grip gently at the wrist to prevent the sleeves from riding up during your downswing, while the ribbed hem keeps everything neatly in place under a gilet or waterproof layer if conditions deteriorate further. This balance of structure and flexibility makes it equally suitable as a standalone top or as part of a layered system.
This sweater carries the internationally recognised Woolmark quality certification, guaranteeing that the wool fibres used meet the highest standards for purity and performance. Despite its premium construction, care could not be more straightforward — simply machine wash on a wool or cold cycle and the sweater will retain its shape, softness and colour wash after wash. This makes it an ideal choice for the dedicated golfer who wants premium performance without the fuss of hand-washing or dry-cleaning after every round. The combination of quality and practicality sets this sweater apart from less well-engineered alternatives.
| Gender | Men's |
| Fit | Regular Fit |
| Fabric Composition | 50% Merino Wool, 50% Acrylic |
| Technology | Opti-Therm thermal insulation |
| Collar | Mock neck with 1/4 zip |
| Cuffs & Hem | Ribbed |
| Sleeve | Long sleeve |
| Colour | Steel Heather |
| Branding | Callaway Tour logo on left chest, Odyssey logo on right sleeve |
| Care | Machine washable — wool or cold wash cycle |
| Certification | Woolmark approved |
| Collection | Weather Series |
| Available Sizes | S, M, L, XL, XXL, 3XL |
| Size | S | M | L | XL | XXL | 3XL |
| Neck circumference (cm) | 36–38 | 39–41 | 41–43 | 43–45 | 45–47 | 47–49 |
| Chest circumference (cm) | 91–97 | 99–104 | 107–112 | 114–119 | 122–127 | 130–135 |
| Waist circumference (cm) | 71–76 | 81–86 | 91–97 | 102–107 | 112–117 | 122–127 |
Values in the table are approximate guidelines only. Size guide source: callawayapparel.com.
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