Alpha Hamaraki by Yamatomichi

A core warmer

A Hamaraki is a traditional Japanese garment worn to keep the belly and core warm. Simple, practical, and effective, it remains a trusted way to stay comfortable in the cold. Yamatomichi took this and made it with breathable and insulating Alpha™ Direct Fleece on the inside and wind-blocking, and air-premeable Shadow Rip fabric on the outside. This layer delivers warmth where you need it without overheating the rest of your body. It's perfect for running, fastpacking, and hiking hard in the cold. 

Features: 

• Velcro strip for easy on and off and to make it snug while wearing

• Alpha™ Direct Fleece lining for heat insulation, breathability, and moisture management

• Zippered pocket for snacks and heat packs

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Sizing:

 Size Full Length Width

Small 26.8"-31.9" | 68 - 81cm

7.5" | 19cm

Medium 31.1"-36.2" | 79 - 92cm

7.9" | 20cm

Large 35.4"-40.6" | 90 - 103cm

8.3" | 21cm

Weight:

• Small: 1.3oz | 37g 

• Medium: 1.8oz | 52g 

• Large: 2.1oz | 59g 

*Weight may vary due to fabric variation 

Materials: 

• Facing: Shadow Rip (Recycled Polyester 75％) 56g/m²

• Lining: Polartec Alpha™ Direct (Recycled Polyester 63％) 136g/㎡

• YKK #3 Coil Zipper

Made in Miyagi, Japan

Based in Kamakura, Japan  | Est. 2011

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Care: 

• Use a neutral detergent. Machine wash on a gentle or delicate cycle at 86°F | 30°C or below.

• Wash separately or use a laundry net.