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Original Ray-Ban RB3721CH Replacement Lenses

Price range: $25.99 through $26.99

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

5J - SILVER MIRROR CHROMANCE POLARIZED - PLASTIC

6O - GREEN MIRROR SILVER CHORMANCE POLARIZED - PLASTIC

A1 - FLASH BLUE MIRROR CHROMANCE POLARIZED - PLASTIC

J0 - BLUE DEGRADED MIRROR CHROMANCE POLARIZED - PLASTIC

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Description
Additional information

Description

Restore Your Ray-Ban RB3721CH with Original Replacement Lenses

Bring your Ray-Ban RB3721CH sunglasses back to life with these 100% original replacement lenses, manufactured and distributed by Ray-Ban/Luxottica. Each pair ensures a perfect fit, premium optical quality, and the iconic RB logo laser-etched for authenticity. Whether your lenses are scratched, damaged, or you simply want a fresh look, these official lenses guarantee your sunglasses retain their original value and performance.

Choosing original Ray-Ban replacement lenses means you maintain the intended visual experience and sun protection. Avoid generic parts-trust the precision, design, and official warranty that only authentic Ray-Ban lenses provide.

Technical Specifications and Materials

Compatibility: Exclusively for Ray-Ban RB3721CH. Always check the model code on your frame.
Sizes and measurements: Lens size: 59 mm. Diameter: 67 mm. Height: 45 mm.
Lens material: Plastic (polycarbonate), Chromance standard.
Available colors:
- 5J – Silver Mirror Chromance Polarized
- J0 – Blue Degraded Mirror Chromance Polarized
- 6O – Green Mirror Silver Chromance Polarized
- A1 – Flash Blue Mirror Chromance Polarized
Shape: Square
Use: Sun (premium UV protection)
Audience: Adult
Product type: Original Ray-Ban replacement, distributed by Luxottica

How to Check Your Model and Exact Size

To ensure compatibility, follow these steps:

Find the model code (RB3721CH) engraved on the inside of your temple arm.
Check the size (e.g., 59) and color code, usually next to the model number.
Compare the diameter and shape of your original lenses with the specifications.
If unsure, measure your current lenses and match them to the listed details.

Additional information

Size	59
color	5J – SILVER MIRROR CHROMANCE POLARIZED – PLASTIC , 6O – GREEN MIRROR SILVER CHORMANCE POLARIZED – PLASTIC , A1 – FLASH BLUE MIRROR CHROMANCE POLARIZED – PLASTIC , J0 – BLUE DEGRADED MIRROR CHROMANCE POLARIZED – PLASTIC