Seam Sectional Sofa
by Prostoria
PRODUCT INFORMATION
description
specs
product sheet
lead times
The Seam sofa by Prostoria is a modern designer sectional sofa and lounge system defined by the purity of a single sculptural volume—no loose cushions, no extra layers, just one continuous form built for comfortable, supported seating. The sectional version with chaise lounge extends that clean silhouette into a relaxed chaise sectional setup, ideal for stretching out while keeping a tailored, architectural look.
A dramatically deep backrest and armrests sweep inward in a smooth arc, creating an ergonomic, enveloping cradle that feels both structured and soft. Precise, visible stitched seams trace the geometry and “draw” the silhouette, turning a functional detail into the collection’s signature line. Minimal yet expressive, Seam delivers a quiet, iconic presence in contemporary living rooms and performs just as confidently in contract and hospitality environments—hotel lobbies, waiting areas, offices, and reception lounges—where a modern sectional sofa with chaise needs to look sharp and sit even better.
dimensions featuresStructure: plywood, metal frame
Suspension: elastic webbing
Seat & backrest: HR foam, polyester wadding
Base: metal + powder coating
Upholstery: fabric/leather
The Seam sofa by Prostoria is a modern designer sectional sofa and lounge system defined by the purity of a single sculptural volume—no loose cushions, no extra layers, just one continuous form built for comfortable, supported seating. The sectional version with chaise lounge extends that clean silhouette into a relaxed chaise sectional setup, ideal for stretching out while keeping a tailored, architectural look.
A dramatically deep backrest and armrests sweep inward in a smooth arc, creating an ergonomic, enveloping cradle that feels both structured and soft. Precise, visible stitched seams trace the geometry and “draw” the silhouette, turning a functional detail into the collection’s signature line. Minimal yet expressive, Seam delivers a quiet, iconic presence in contemporary living rooms and performs just as confidently in contract and hospitality environments—hotel lobbies, waiting areas, offices, and reception lounges—where a modern sectional sofa with chaise needs to look sharp and sit even better.
dimensions featuresStructure: plywood, metal frame
Suspension: elastic webbing
Seat & backrest: HR foam, polyester wadding
Base: metal + powder coating
Upholstery: fabric/leather
Structure: plywood, metal frame
Suspension: elastic webbing
Seat & backrest: HR foam, polyester wadding
Base: metal + powder coating
Upholstery: fabric/leather
GALLERY
A single sculpted volume—no fluff, no clutter, all comfort. The sofa that feels tailored, not piled on. One continuous curve. One iconic seam. Clean geometry, surprisingly cozy seat. A sweeping arc that pulls you in—and holds you there. Minimal on the outside, deeply supportive inside.
VARIANTS
2-Seater Sofa 3-Seater Sofa Sectional Sofa OttomanDOWNLOADS
↓ Prostoria catalog
↓ Product sheet
↓ Prostoria materials | fabric + metal + wood
2D dwgSeam collection 2D
3D gsm Seam_2seater sofa_Prostoria
Seam_chaise longue 160_L_Prostoria
Seam_3seater sofa_Prostoria
Seam_chaise longue 180_L_Prostoria
Seam_corner extended_L_Prostoria
Seam_end unit_L_Prostoria
Seam End Unit 158 L
Seam End Unit 158 R
Seam_chaise longue 160_R_Prostoria
Seam_chaise longue 180_L_Prostoria
Seam_chaise longue 180_R_Prostoria
Seam_corner extended_L_Prostoria
Seam_end unit_L_Prostoria
Seam_corner extended_R_Prostoria
Seam_end unit_R_Prostoria
Seam End Unit 158 L
Seam_2seater sofa_Prostoria
Seam End Unit 158 R
Seam_3seater sofa_Prostoria
Seam_chaise longue 160_L_Prostoria
Seam_chaise longue 160_R_Prostoria
Seam_chaise longue 160_L_Prostoria
Seam_chaise longue 180_L_Prostoria
Seam_chaise longue 180_R_Prostoria
Seam_corner extended_R_Prostoria
Seam_corner extended_L_Prostoria
Seam_end unit_L_Prostoria
Seam End Unit 158 R
Seam End Unit 158 L
Seam_2seater sofa_Prostoria
Seam_end unit_R_Prostoria
Seam_3seater sofa_Prostoria
Seam_chaise longue 180_L_Prostoria
Seam_chaise longue 180_R_Prostoria
Seam_corner extended_L_Prostoria
Seam_corner extended_R_Prostoria
Seam_end unit_R_Prostoria
Seam_end unit_L_Prostoria
Seam End Unit 158 L
Seam_2seater sofa_Prostoria
Seam End Unit 158 R
Seam_3seater sofa_Prostoria
Seam_chaise longue 160_R_Prostoria
Seam_chaise longue 160_L_Prostoria
Seam collection 2D
Seam_2seater sofa_Prostoria
Seam_chaise longue 160_L_Prostoria
Seam_3seater sofa_Prostoria
Seam_chaise longue 180_L_Prostoria
Seam_corner extended_L_Prostoria
Seam_end unit_L_Prostoria
Seam End Unit 158 L
Seam End Unit 158 R
Seam_chaise longue 160_R_Prostoria
Seam_chaise longue 180_L_Prostoria
Seam_chaise longue 180_R_Prostoria
Seam_corner extended_L_Prostoria
Seam_end unit_L_Prostoria
Seam_corner extended_R_Prostoria
Seam_end unit_R_Prostoria
Seam End Unit 158 L
Seam_2seater sofa_Prostoria
Seam End Unit 158 R
Seam_3seater sofa_Prostoria
Seam_chaise longue 160_L_Prostoria
Seam_chaise longue 160_R_Prostoria
Seam_chaise longue 160_L_Prostoria
Seam_chaise longue 180_L_Prostoria
Seam_chaise longue 180_R_Prostoria
Seam_corner extended_R_Prostoria
Seam_corner extended_L_Prostoria
Seam_end unit_L_Prostoria
Seam End Unit 158 R
Seam End Unit 158 L
Seam_2seater sofa_Prostoria
Seam_end unit_R_Prostoria
Seam_3seater sofa_Prostoria
Seam_chaise longue 180_L_Prostoria
Seam_chaise longue 180_R_Prostoria
Seam_corner extended_L_Prostoria
Seam_corner extended_R_Prostoria
Seam_end unit_R_Prostoria
Seam_end unit_L_Prostoria
Seam End Unit 158 L
Seam_2seater sofa_Prostoria
Seam End Unit 158 R
Seam_3seater sofa_Prostoria
Seam_chaise longue 160_R_Prostoria
Seam_chaise longue 160_L_Prostoria
MATERIALS – COLORS AND FINISHES
PROSTORIA – CONTRACT GRADE MATERIALS FOR THE USA
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PROSTORIA – RESIDENTIAL MATERIALS FOR THE USA
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