A starting price of ¥13,200 per garment is certainly not inexpensive. But the picture changes when you consider the cost per wear.

Less than a daily cup of coffee, with comfort that lasts for five years.

Merino wool naturally regulates temperature and moisture. It absorbs perspiration and quickly releases it outward, so many people find it cooler than cotton. In fact, many customers wear and enjoy C-one T-shirts throughout July and August.

The idea that wool is only for winter is outdated. Superfine Super 100's fibers remain comfortable even in summer.

C-one uses Super 100's-grade wool with fibers measuring 18.5 microns or less. These superfine fibers are less likely to feel irritating than ordinary wool.

A smooth fabric designed to be worn directly against bare skin.

It is machine washable. Simply place it in a laundry net and use a mild detergent for delicate garments—no dry cleaning required. Avoid the tumble dryer, reshape the garment, and lay it flat to dry to keep it looking beautiful for longer.

Wash it at home with a laundry net and mild detergent.

It is unlikely to shrink when washed correctly. Hot water, heavy friction, and tumble drying are the main causes of shrinkage. Wash gently in water below 30°C, use a short spin cycle, and lay flat to dry to help maintain its shape.

Simply avoid heat, friction, and tumble drying. Once you know how, care is easy.

Finer fibers tend to pill less. The superfine fibers used in Super 100's wool are less prone to pilling than ordinary wool. However, take care around high-friction areas such as bag straps and chair backs.

Superfine fibers are less prone to pilling. Reduce friction to help your garment last longer.

Moths are attracted to residue such as perspiration and skin oils. Wash the garment thoroughly before storage and keep it with moth repellent. Proper off-season storage can prevent nearly all moth damage.

Wash before storing and use moth repellent. That is usually all it takes.

C-one mainly offers unisex garments. Check the size chart on each product page and choose the fit and silhouette you prefer.

Choose according to your body shape and preferred styling—not gender.

A size chart is provided on every product page. The right size will depend on whether you prefer a clean, fitted look or a more relaxed silhouette.

Comparing the measurements with a garment you already own makes choosing easier.

Merino wool is a natural protein fiber that can be worn for more than ten years with proper care. Many C-one customers have enjoyed their garments for three to five years. Correct washing and storage are the keys to longevity.

With proper care, it can last more than ten years—making it better value over time than replacing inexpensive clothes every year.