Prescription Lenses for Ray-Ban 3721

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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Prescription Lenses for Ray-Ban 3721

Restore the iconic look and visual comfort of your Ray-Ban glasses with our replacement prescription lenses. If your current lenses are scratched, damaged, or your prescription has changed, you can refresh your eyewear without the need for a new frame. These replacement prescription lenses for Ray-Ban are not manufactured by Ray-Ban, but are designed for an exact fit and outstanding optical performance on the 3721 model.

Compatibility of Prescription Lenses for Ray-Ban 3721

Always check the inside temple of your Ray-Ban frame to confirm your model number (Ray-Ban 3721). With a square shape and measurements of 45mm height, 67mm diameter, and base curve 6, our lenses fit perfectly. Using our configurator, you can select the prescription, treatments, and tints you need for everyday use or sun protection.

Features of Prescription Lenses for Ray-Ban 3721

UV400 protection for everyday safety
High-quality CR39 lenses
Impact resistance for lasting durability
Lightweight comfort
Precision fit for Ray-Ban 3721 frames

How to Install Replacement Lenses

Replacing your lenses at home is easy and safe. Carefully remove the old lenses and gently snap the new ones in place. For best results, follow our step-by-step guide or consult your local optician if needed.

Maintenance and Warranty

Clean your lenses with water and a microfiber cloth to keep them clear. We offer a 3-year warranty against manufacturing defects (this warranty does not cover scratches caused by normal use).