Pre-Owned & Vintage THE SEI for Kids

Shop designer preowned THE SEI for kids from 950+ stores. Compare prices, find the best deals, and explore the latest arrivals—all in one place.

gender: kids ×

condition: Pre-Owned ×

designers: THE SEI ×

440 results from 950+ partners | Page 1

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THE SEI

Pre-owned Blazer In Red

$70 $28 (60% OFF)

Only at 1 store

THE SEI

Pre-owned V-neck Long Dress In Green

$400 $240 (40% OFF)

Only at 1 store

THE SEI

Pre-owned One-shoulder Mini Dress In Pink

$150 $75 (50% OFF)

Only at 1 store

THE SEI

Pre-owned Set In Neutral

$275 $55 (80% OFF)

Only at 1 store

THE SEI

Pre-owned Blazer In Pink

$75 $30 (60% OFF)

Only at 1 store

THE SEI

Pre-owned Blazer In Orange

$45 $23 (49% OFF)

Only at 1 store

THE SEI

Pre-owned Solid Single Button Blazer In Blue

$295 $104 (65% OFF)

Only at 1 store

THE SEI

Pre-owned Blazer In Orange

$55 $28 (49% OFF)

Only at 1 store

THE SEI

Pre-owned Merino Wool Asymmetrical Sweater In Neutral

$95 $38 (60% OFF)

Only at 1 store

THE SEI

Pre-owned Leather Mini Skirt Women's In Beige

$250

Only at 1 store

THE SEI

Pre-owned Blazer Jacket In Pink

$98 $54 (45% OFF)

Only at 1 store

THE SEI

Pre-owned Blazer In Blue

$80 $64 (20% OFF)

Only at 1 store

THE SEI

Pre-owned Lambskin Blazer W/ Tags In White

$275 $193 (30% OFF)

Only at 1 store

THE SEI

Pre-owned Blazer W/ Tags In Neutrals

$135

Only at 1 store

THE SEI

Pre-owned Blazer In Purple

$50 $40 (20% OFF)

Only at 1 store

THE SEI

Pre-owned Silk Blazer In Black

$210 $179 (15% OFF)

Only at 1 store

THE SEI

Pre-owned Blazer W/ Tags In Neutral

$150

Only at 1 store

THE SEI

Pre-owned Blazer In Blue

$75 $60 (20% OFF)

Only at 1 store

THE SEI

Pre-owned Blazer In White

$75 $53 (29% OFF)

Only at 1 store

THE SEI

Pre-owned Blazer W/ Tags In Purple

$115 $81 (30% OFF)

Only at 1 store

THE SEI

Pre-owned Blazer In Neutrals

$40 $28 (30% OFF)

Only at 1 store

THE SEI

Pre-owned Blazer In Orange

$85

Only at 1 store

THE SEI

Pre-owned Blazer W/ Tags In Orange

$85

Only at 1 store

THE SEI

Pre-owned Lambskin Biker Jacket In Neutral

$195 $176 (10% OFF)

Only at 1 store

THE SEI

Pre-owned Trench Coat In Green

$175 $123 (30% OFF)

Only at 1 store

THE SEI

Pre-owned Blazer In Purple

$50 $25 (50% OFF)

Only at 1 store

THE SEI

Pre-owned Blazer In White

$55 $44 (20% OFF)

Only at 1 store

THE SEI

Pre-owned Lambskin Blazer In Neutrals

$165

Only at 1 store

THE SEI

Pre-owned Blazer In White

$55 $44 (20% OFF)

Only at 1 store

THE SEI

Pre-owned V-neck Sweater In Blue

$60 $24 (60% OFF)

Only at 1 store

THE SEI

Pre-owned Merino Wool Off-the-shoulder Sweater In Orange/red

$105

Only at 1 store

THE SEI

Pre-owned Merino Wool V-neck Sweater W/ Tags In Green

$185

Only at 1 store

THE SEI

Pre-owned Merino Wool Off-the-shoulder Sweater W/ Tags In Green

$185

Only at 1 store

THE SEI

Pre-owned Off-the-shoulder Sweater In Neutrals

$45 $36 (20% OFF)

Only at 1 store

THE SEI

Pre-owned V-neck Sweater In Brown

$65 $52 (20% OFF)

Only at 1 store

THE SEI

Pre-owned Merino Wool Mock Neck Sweater In Green

$145 $116 (20% OFF)

Only at 1 store

THE SEI

Pre-owned Merino Wool Sweatpants W/ Tags In Purple

$65 $26 (60% OFF)

Only at 1 store

THE SEI

Pre-owned Merino Wool V-neck Sweater In Green

$105 $84 (20% OFF)

Only at 1 store

THE SEI

Pre-owned Crew Neck Sweater In Orange

$60 $51 (15% OFF)

Only at 1 store

THE SEI

Pre-owned Merino Wool V-neck Sweater In Green

$50 $35 (30% OFF)

Only at 1 store

THE SEI

Pre-owned V-neck Sweater In Pink

$35 $21 (40% OFF)

Only at 1 store

THE SEI

Pre-owned Merino Wool Off-the-shoulder Sweater In Brown

$80

Only at 1 store

THE SEI

Pre-owned Patterned Off-the-shoulder Sweater W/ Tags In Blue

$95

Only at 1 store

THE SEI

Pre-owned Merino Wool Off-the-shoulder Sweater In Red

$135 $95 (30% OFF)

Only at 1 store

THE SEI

Pre-owned Merino Wool Off-the-shoulder Sweater In Black

$135 $95 (30% OFF)

Only at 1 store

THE SEI

Pre-owned Strapless Top In White

$155 $78 (50% OFF)

Only at 1 store

THE SEI

Pre-owned Halterneck Long Dress In Gray

$225 $90 (60% OFF)

Only at 1 store

THE SEI

Pre-owned Halterneck Jumpsuit In Neutral

$115 $23 (80% OFF)

Only at 1 store

THE SEI

Pre-owned Long Sleeve Button-up Top In Orange

$90 $36 (60% OFF)

Only at 1 store

THE SEI

Pre-owned Silk Halterneck Top W/ Tags In Purple

$210 $105 (50% OFF)

Only at 1 store

THE SEI

Pre-owned V-neck Long Sleeve Top In Black

$105 $42 (60% OFF)

Only at 1 store

THE SEI

Pre-owned Vest W/ Tags In Neutrals

$125 $100 (20% OFF)

Only at 1 store

THE SEI

Pre-owned V-neck Three-quarter Sleeve Blouse In Brown

$70 $28 (60% OFF)

Only at 1 store

THE SEI

Pre-owned Sleeveless Top White Strapless Neckline Tops

$41 $23 (44% OFF)

Only at 1 store

THE SEI

Pre-owned Scoop Neck Midi Length Dress In Green

$145 $37 (74% OFF)

Only at 1 store

THE SEI

Pre-owned Silk Long Dress In Purple

$385 $154 (60% OFF)

Only at 1 store

THE SEI

Pre-owned Square Neckline Midi Length Dress In Pink

$155 $31 (80% OFF)

Only at 1 store

THE SEI

Pre-owned Silk Strapless Top W/ Tags In Brown

$135 $95 (30% OFF)

Only at 1 store

THE SEI

Pre-owned Nylon Long Dress In Silver

$355 $284 (20% OFF)

Only at 1 store

THE SEI

Pre-owned Silk Asymmetrical Top In Blue

$135 $41 (70% OFF)

Only at 1 store

THE SEI

Pre-owned Silk V-neck Blouse In Blue

$165 $132 (20% OFF)

Only at 1 store

THE SEI

Pre-owned One-shoulder Mini Dress In Pink

$60 $48 (20% OFF)

Only at 1 store

THE SEI

Pre-owned Halterneck Midi Length Dress In Green

$60 $48 (20% OFF)

Only at 1 store

THE SEI

Pre-owned Off-the-shoulder Sleeveless Top W/ Tags In Neutrals

$195 $156 (20% OFF)

Only at 1 store

THE SEI

Pre-owned Square Neckline Midi Length Dress In Blue

$95 $57 (40% OFF)

Only at 1 store

THE SEI

Pre-owned Silk Long Dress In Yellow

$210 $105 (50% OFF)

Only at 1 store

THE SEI

Pre-owned Asymmetrical Sleeveless Crop Top In Black

$85 $60 (29% OFF)

Only at 1 store

THE SEI

Pre-owned V-neck Long Dress In Blue

$210 $63 (70% OFF)

Only at 1 store