Alpinestars Supertech Goggles Photochromic Lens

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

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The Supertech Photochromic Lens is a premium MX replacement goggle lens engineered for riders who need adaptable vision across changing light conditions. Featuring Absolute Vision technology and an anti-fog, injection-molded polycarbonate construction, it delivers exceptional clarity, reduced stray flat light, and nearly zero distortion. As an official Alpinestars replacement part, it restores reliable all-condition visibility while preserving tear-off compatibility for race-day readiness. Key Features: absolute vision optics: Supertech lens technology delivers crisp, race-ready visibility for sharper line reading in motocross conditions. photochromic tint: Adaptive warm colouring helps reduce harsh stray flat light so vision stays more comfortable as track light changes. visual comfort: Tuned light response helps limit eye strain and support focus through longer motos and demanding race pace. injection-moulded precision: Low-distortion lens shaping helps preserve a true field of view for more confident terrain assessment. anti-fog coating: Helps maintain a clear view when temperature and humidity shift during intense riding sessions. race-ready compatibility: Official replacement fit restores Supertech goggle performance without changing the original lens setup. tear-off posts: Integrated posts keep the lens ready for quick tear-off installation in wet, dusty, or race-day conditions. all-condition vision: Photochromic response helps keep sight balanced across bright and variable light, supporting consistent off-road performance. Protection: 25 05% to 35+5% visible light transmission, with a filter category value from 0 to 2. A filter category of 2 indicates a tinted lens that allows 18-43% of light to pass through, supporting glare reduction in moderate sunlight. According to European statutory law, the CE mark is a conformity requirement for the marketing of this product. Fully CE-certified personal eye protection for motorcycle and moped use, both on the road and for off-road sport or leisure use. Certified in accordance with PPE Regulation (EU) 2016/425 and the EN 1938:2010 standard. Construction: Injection-molded lens constructed from high-quality, impact-resistant polycarbonate.