Arch4

Arch4 designs understated, high-quality knitwear that you’ll reach for often and cherish for years to come. The brand uses only the finest Mongolian-sourced organic cashmere, which is unmatched in softness, lightness and warmth. Shop our selection of sweaters in earthy hues.

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ARCH4
Marisol cashmere cardigan
£270
ARCH4
Caspian cashmere cardigan
£270
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Cashmere T-shirt
£205
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Clarbeston cotton, silk and cashmere-blend maxi dress
£300
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Octavia cropped striped cashmere polo shirt
£300
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Cordelia crocheted cotton, silk and cashmere-blend maxi dress
£385
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Kai cashmere sweater
£220
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Marisol cashmere cardigan
£270
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Sunny crocheted cotton sweater
£240
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Victoria striped cashmere polo shirt
£410
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Dorian striped cashmere sweater
£240
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Elio cashmere cardigan
£270
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Bea cashmere cardigan
£305
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Cashmere and silk-blend wrap
£370
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Ray crocheted cotton straight-leg pants
£260
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Off-the-shoulder silk and cashmere-blend top
£160
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Rosanna cashmere cardigan
£465
50% off
£233
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Chiswick cashmere sweater
£280
40% off
£168
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Darya cashmere polo shirt
£225
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Islington cashmere sweater
£535
NET SUSTAIN
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Victoria oversized striped cashmere polo sweater
£410
NET SUSTAIN
ARCH4
Chapman argyle cashmere sweater
£454
50% off
£227
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
New Cami ribbed organic cashmere cardigan
£265
50% off
£133
NET SUSTAIN
ARCH4
Courchevel embroidered argyle cashmere sweater
£535
60% off
£214
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Cotton, silk and cashmere mini dress
£240
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Queen's Gate organic cashmere cardigan
£300
50% off
£150
NET SUSTAIN
ARCH4
Verona organic cashmere and silk-blend sweater and scarf set
£455
50% off
£228
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Ariana ribbed organic cashmere sweater
£265
40% off
£159
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Oversized cashmere and silk-blend sweater
£491
30% off
£344
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Penelopy lace-trimmed ribbed organic cashmere midi skirt
£330
40% off
£198
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Nancy ribbed cashmere scarf
£315
60% off
£126
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Ariana ribbed cashmere turtleneck sweater
£265
50% off
£133
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Mona cashmere wrap
£491
50% off
£246
NET SUSTAIN
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Estelle cashmere sweater
£465
40% off
£279
NET SUSTAIN
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Islington cashmere sweater
£535
40% off
£321
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Rosanna cashmere cardigan
£521
50% off
£261
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Cashmere travel set
£152
40% off
£92
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
World's End oversized cashmere turtleneck sweater
£465
40% off
£279
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
The Ivy cashmere sweater
£455
40% off
£273
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Snowmass Fair Isle cashmere sweater
£602
40% off
£362
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Nancy ribbed cashmere scarf
£315
60% off
£126
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Austria Fair Isle cashmere scarf
£335
60% off
£134
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
World's End oversized cashmere turtleneck sweater
£465
NET SUSTAIN
ARCH4
Sloane embroidered argyle cashmere sweater
£455
30% off
£319
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Fair Isle cashmere half-zip sweater
£491
30% off
£344
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
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Sasha belted ribbed cashmere cardigan
£602
30% off
£422
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
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Bessi cashmere polo sweater
£385
50% off
£193
NET SUSTAIN
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Snowbird cashmere wrap
£265
50% off
£133
NET SUSTAIN
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Janelle cashmere cardigan
£465
40% off
£279
NET SUSTAIN
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Tulip crocheted cashmere cardigan
£471
40% off
£283
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Lorenz Fair Isle cashmere beanie
£110
60% off
£44
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Clara cashmere beanie
£105
50% off
£53
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Jessie ribbed cashmere gloves
£111
50% off
£56
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Ella ribbed cashmere half-zip sweater and leggings ski set
£535
40% off
£321
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Patrizia cable-knit cashmere turtleneck sweater
£400
40% off
£240
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Rome cropped organic cashmere and silk-blend cardigan
£290
30% off
£203
NET SUSTAIN
ARCH4
Jennifer ribbed organic cashmere polo shirt
£265
40% off
£159
NET SUSTAIN
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Cable-knit cashmere balaclava
£111
40% off
£67
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Ribbed cashmere wrist warmers
£100
40% off
£60
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
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King's Road organic cashmere sweater
£455
40% off
£273
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Juliann ribbed cashmere gloves
£100
40% off
£60
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Ariana ribbed turtleneck cashmere sweater
£265
40% off
£159
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Monroe off-the-shoulder organic cashmere top
£305
30% off
£214
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
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Bessi cashmere polo sweater
£385
40% off
£231
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
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Cassie cable-knit silk and organic cashmere-blend tank
£200
30% off
£140
NET SUSTAIN
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Marilyn off-the-shoulder organic cashmere midi dress
£535
50% off
£268
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
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Nara ribbed cashmere zip-up cardigan
£468
30% off
£328
EXCLUSIVE
NET SUSTAIN
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+ NET SUSTAIN The Ivy cashmere sweater
£455
50% off
£228
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Foxridge organic cashmere cardigan
£365
40% off
£219
NET SUSTAIN
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Pimlico cable-knit cashmere cardigan
£465
40% off
£279
LOW STOCK
NET SUSTAIN
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Jackson Fair Isle cashmere sweater
£465
40% off
£279
LOW STOCK
NET SUSTAIN
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Ribbed cashmere wrist warmers
£100
50% off
£50
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Marina cable-knit cashmere sweater
£450
50% off
£225
NET SUSTAIN
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Clara cashmere beanie
£105
50% off
£53
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Selcombe layered two-tone organic cashmere top
£195
30% off
£137
NET SUSTAIN
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Nillie ribbed organic cashmere midi skirt
£380
60% off
£152
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
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Ezra cashmere bandana
£100
40% off
£60
LOW STOCK
NET SUSTAIN
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Juliann ribbed cashmere gloves
£100
40% off
£60
LOW STOCK
NET SUSTAIN
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Organic cashmere sweater
£305
40% off
£183
LOW STOCK
NET SUSTAIN
ARCH4
Jessie ribbed cashmere gloves
£111
50% off
£56
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Sackville cashmere cardigan
£425
50% off
£213
LOW STOCK
NET SUSTAIN
ARCH4
Skylark ribbed organic cashmere midi dress
£465
30% off
£326
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Selcombe layered two-tone organic cashmere top
£195
30% off
£137
LOW STOCK
NET SUSTAIN
ARCH4
Sabrina pleated organic cashmere midi skirt
£465
40% off
£279
NET SUSTAIN
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Janelle cashmere cardigan
£521
40% off
£313
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Eldergrove tie-detailed organic cashmere sweater
£325
30% off
£228
NET SUSTAIN
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Lorenz Fair Isle cashmere beanie
£121
40% off
£73
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Selcombe layered two-tone organic cashmere top
£195
30% off
£137
NET SUSTAIN
ARCH4
+ NET SUSTAIN The Ivy cashmere sweater
£496
50% off
£248
LOW STOCK
NET SUSTAIN
ARCH4
+ NET SUSTAIN Janelle organic cashmere cardigan
£465
40% off
£279
LOW STOCK
NET SUSTAIN
ARCH4
Janelle cashmere cardigan
£490
40% off
£294
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Linda cashmere sweater
£349
60% off
£140
USE CODE FLASH15 AT CHECKOUT
ARCH4
Sloane embroidered argyle cashmere sweater
£496
60% off
£199
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
Iman cashmere-blend bouclé-knit sweater
£663
70% off
£199
USE CODE FLASH15 AT CHECKOUT
NET SUSTAIN
ARCH4
+ NET SUSTAIN World's End cashmere turtleneck sweater
£521
40% off
£313
LOW STOCK
NET SUSTAIN
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