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Free delivery
Free delivery with purchases over £49
100-day return
Returns are accepted within 100 days
Shipping
Your order will be delivered within 3-5 working days
The mid layer is the piece in a layering system that retains warmth after the base layer has managed moisture. At DILLING, merino wool mid layers are made to sit between a wool base layer and an outer shell, adding insulation without bulk. Merino wool works in this position because it traps air within its fibres, which slows heat loss, while continuing to breathe so that moisture from exertion can pass through rather than accumulate.
A good mid layer is versatile. In milder conditions, it can serve as an outer garment on its own. In colder weather, it sits underneath a jacket or coat and contributes the warmth that the outer layer cannot provide on its own. The merino wool mid layer range at DILLING includes sweaters, zip-ups, and crew necks suited to a range of activities and everyday wear.
Merino wool fibres are finer than standard wool, which means the fabric can be woven or knitted into lightweight structures that still insulate effectively. In a layering system, the mid layer needs to add warmth without adding so much weight or thickness that it restricts movement or becomes uncomfortable under outerwear. Merino wool meets this requirement consistently: it insulates, manages moisture, and remains lightweight in thinner weights.
Fleece is a common alternative to wool as a mid layer. Fleece is typically lighter and dries faster when wet, which makes it a practical choice for high-output activities in wet conditions. Merino wool, by contrast, retains its insulating properties even when damp, which makes it more suitable for extended wear in changeable weather. Merino also resists odour better than synthetic fleece, which is an advantage when wearing a garment for several days without washing.
For hiking, running, or working outdoors, a merino wool mid layer is a practical choice across autumn and winter. The breathability of the fabric means it handles the temperature variations that come with moving between effort and rest. When you stop moving and your body heat drops, the wool continues to insulate. When you pick up the pace again and generate more heat, it allows moisture to pass through rather than trapping it.
Merino wool mid layers are not limited to outdoor use. A merino crew neck or zip-up sweater works equally well as a lightweight layer in everyday settings: worn under a coat on the commute, or on its own in an office or home. The material does not pill as quickly as lower-quality wool, and it holds its shape through regular washing better than many synthetic mid layers.
Mid layers in the DILLING merino range are offered in a range of fits. Some are cut close to the body for wearing under outerwear without adding bulk; others have a more relaxed fit for wearing as a standalone outer piece. Size guidance is available on each individual product page, and the fit notes will help you choose based on whether you intend to layer the piece or wear it on its own.
Merino wool mid layers at DILLING can be machine washed on a wool cycle at 30°C. Lay flat to dry. Do not tumble dry. Detailed care instructions are listed on each product label.
