Name: HEATTECH Ultra Warm T-Shirt
SKU: 2654-heattech-ultra-warm-t-shirt
Availability: InStock

HEATTECH Ultra Warm T-Shirt

Size chart

Clothing Size Conversion Chart
Category	US	EU	UK	Chest (in)	Waist (in)	Hips (in)
Men	XS	44	34	32-34	26-28	33-35
	S	46	36	34-36	28-30	35-37
	M	48	38	38-40	32-34	39-41
	L	50	40	42-44	36-38	43-45
	XL	52	42	46-48	40-42	47-49
Women	XS	32	6	31-32	24-25	33-34
	S	34	8	33-34	26-27	35-36
	M	36	10	35-36	28-29	37-38
	L	38-40	12-14	37-39	30-32	39-41
	XL	42	16	40-42	33-35	42-44
Youth	XS	128	7	26-28	23-24	26-28
	S	134	8	28-30	24-25	28-30
	M	140	10	30-32	25-26	30-32
	L	146	12	32-34	26-27	32-34
	XL	152	14	34-36	27-28	34-36

Pants Size Conversion Chart
Category	US	EU	UK	Waist (in)	Hip (in)	Inseam (in)
Men	28	44	28	28	34	30
	30	46	30	30	36	31
	32	48	32	32	38	32
	34	50	34	34	40	33
	36	52	36	36	42	34
Women	0	32	4	24	34	30
	2	34	6	25	35	30
	4	36	8	26	36	31
	6	38	10	27	38	32
	8	40	12	28	40	32

Shoes Size Conversion Chart
Category	US	EU	UK	Foot Length (in)
Men	6	39	5.5	9.25
	7	40	6.5	9.625
	8	41	7.5	10
	9	42	8.5	10.25
	10	43	9.5	10.625
	11	44	10.5	11
	12	45	11.5	11.25
	13	46	12.5	11.625
Women	5	35	2.5	8.5
	6	36	3.5	8.875
	7	37	4.5	9.25
	8	38	5.5	9.625
	9	39	6.5	10
	10	40	7.5	10.25
	11	41	8.5	10.625
	12	42	9.5	11
M (Unisex)	5	37	4.5	8.75
	6	38	5.5	9
	7	39	6.5	9.5
	8	40	7.5	10
	9	41	8.5	10.25
	10	42	9.5	10.625
	11	43	10.5	11
	12	44	11.5	11.25

color

BLACK

DARK GRAY

NAVY

OFF WHITE

Size

Clear

Description

Stay warm and protected in extreme cold with Men’s ’HEATTECH’ Ultra Warm T-Shirt, UNIQLO’s most advanced thermal base layer designed for maximum insulation and comfort. Powered by cutting-edge ’HEATTECH’ technology, this ultra-warm T-shirt captures body moisture and converts it into heat, delivering superior warmth without added bulk. The soft, stretchable fabric ensures a snug fit that moves with you, while moisture-wicking properties keep you dry and fresh all day. Whether layered under outerwear or worn solo, this thermal essential is perfect for winter commutes, outdoor adventures, or cozy indoor wear.

– ’HEATTECH’ Ultra Warm Technology: Generates and retains heat for enhanced thermal insulation.
– Ultra-Warm Fabric: Provides maximum warmth while remaining lightweight.
– Soft and Stretchable Material: Offers a comfortable fit that moves with you.
– Moisture-Wicking Properties: Keeps you dry by drawing sweat away from the skin.
– Lightweight Design: Ideal for layering or wearing on its own in cold weather.-Essential Thermal Base Layer: Perfect for winter sports, travel, or everyday cold-weather outfits.

Compare 3 Types of ‘HEATTECH’ Fabric:

‘HEATTECH’
– Lightweight yet warm, ideal for everyday layering.
– Recommended for 41 °F to 68 °F for mild winter days or cozy indoor wear.

‘HEATTECH’ Extra Warm
– About 1.5× warmer than original ‘HEATTECH’, offering added insulation without bulk.
– Perfect for colder days with recommended temperatures from 23 °F to 59 °F.

‘HEATTECH’ Ultra Warm
– Our warmest option, approximately 2.25× warmer than original ‘HEATTECH’.
– Designed for more extreme cold with a recommended range of –4 °F to 50 °F.

Additional information