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Ray-Ban 3931 Replacement Lenses

Price range: $17.99 through $25.99

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

Size

color

31 - GREEN - CRYSTAL

4E - GREEN - CRYSTAL

53 - BROWN - CRYSTAL

56 - BLUE - CRYSTAL

58 - GREEN POLARIZED - CRYSTAL

AF - PURPLE POLARIZED - CRYSTAL

J5 - ULTRA BLACK - CRYSTAL

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Description
Additional information

Description

Are your 3931 glasses suffering from scratched, worn, or visually degraded lenses? Restore clarity and comfort with Genuine Replacement Lenses for model 3931-your official and secure solution against imitations. Crafted from Crystal material, these Original spare parts deliver exceptional optical quality, high scratch resistance, and standard UV protection, preserving your visual experience as intended by Ray-Ban. Only authentic 3931 lenses fit perfectly: check the 3931 model code and size 54 lasered on the inner temple of your frame for precise compatibility. Choose from seven authentic color options: 31 – Green Crystal, 4E – Green Crystal, 53 – Brown Crystal, 56 – Blue Crystal, 58 – Green Polarized Crystal, AF – Purple Polarized Crystal, and J5 – Ultra Black Crystal. Crystal provides clear, sharp vision, consistent color fidelity, and all-day comfort. Curved to base 6 with 54 mm diameter and 42 mm height. Manufactured by Luxottica for a flawless official fit. Renew your 3931 glasses today with Genuine Replacement Lenses-trust only Original spare parts for guaranteed performance and safety.

Additional information

Size	54
color	31 – GREEN – CRYSTAL , 4E – GREEN – CRYSTAL , 53 – BROWN – CRYSTAL , 56 – BLUE – CRYSTAL , 58 – GREEN POLARIZED – CRYSTAL , AF – PURPLE POLARIZED – CRYSTAL , J5 – ULTRA BLACK – CRYSTAL