Sleepwear, Pyjama and Nightwear Manufacturing: Terms, Sets and What to Specify (2026)

Quick answer. Sleepwear manufacturing runs on a minimum of around 600 sets per style and colour, with trials from about 1,000 pieces where a single garment is being tested. Three things separate it from an underwear programme: the unit is a set rather than a garment, the fabric structure decides whether the range suits its season, and the selling window is short enough that the schedule is planned backwards from the season rather than forwards from the order.

1. The terms, and why they matter

• Pyjamas (UK) / pajamas (US). The same garment under two spellings — and the one a UK buyer uses is the one they will search with.
• Sleepwear. The broader category term, covering pyjama sets, nightdresses and sleep shorts.
• Nightwear. Often used for the category as a whole, including heavier winter items.
• Loungewear. Adjacent but distinct: designed to be worn around the home rather than for sleep, which changes the construction and the fabric.

A brief that does not place the range in one of these is a brief that will be quoted as a different product — and the sleepwear versus loungewear boundary matters more than it appears.

2. The unit is a set

• Top and bottom are graded together. A set whose top and bottom fit differently in the same nominal size becomes a return rather than a compromise.
• The size set is a specification item. Which sizes the set is offered in, and whether the top and bottom are cut to the same grade, both belong in the brief.
• Trims are listed separately. A drawcord, a button placket or an applied patch is part of the tested article and needs its own listing.
• Pack format is usually the retail unit. The set, not the garment, is what is packed, priced and merchandised.

3. Fabric structure decides the season

• Knit traps warmth and recovers better, which suits cold conditions and movement.
• Woven generally allows more airflow and holds a crisper print, which suits hot and humid markets.
• Brushed weaves offer warmth with a woven’s stability, and are the usual compromise where both are wanted.
• Weight in g/m² follows the selling window rather than the price tier — the same construction at two weights suits two seasons.
• Flame-resistance requirements apply to children’s sleepwear in some markets, which is a compliance question that sits with the age band rather than with the fabric.

4. What to specify

• The set — top and bottom named, with the measurements for each rather than for the set as a whole.
• Fabric — fibre, blend ratio and weight in g/m², and the structure (knit or woven).
• Grading — the size set, and confirmation that both parts are graded together.
• Trims — every applied item listed individually, since each is part of the tested article.
• Labelling — fibre and care content, size, importer, per destination market.
• Pack — the retail unit, the carton configuration and the carton marks.
• Compliance — destination requirements confirmed at the design stage, including any children’s flame-resistance question.

5. MOQ, season window and lead time

• Minimum. Around 600 sets per style and colour for a set programme, with trials from about 1,000 pieces where a single garment is being tested.
• Season window. Sleepwear has a shorter selling period than everyday underwear, so a delivery late by a few weeks can move past the season rather than reduce it.
• Planning basis. Backwards from the season rather than forwards from the order, since the window does not move.
• Sampling. 7–10 days on a stock block, 12–18 days for full custom development.
• Bulk production. 45–60 days for a new style, 30–40 days on a repeat, from the approved pre-production sample.
• Sea freight. 30–35 days to Europe or the US east coast.

6. Common errors

• Grading the top and bottom separately. A set whose parts fit differently in the same size is a return.
• Choosing the fabric before the season. The structure decides airflow and warmth, so the season comes first.
• Treating sleepwear and loungewear as one category. They are bought for different purposes, which changes the construction and the fabric.
• Leaving the flame-resistance question until testing. In children’s sleepwear it belongs at the design stage, with the age band.
• Planning forwards from the order date. The season does not extend for a late delivery.
• Forgetting that the pack is the retail unit. A set programme is merchandised as a set, which makes the pack format a specification item.

7. How to compare two quotations

• Set against set. With both parts specified, since a quote for the top alone describes a different purchase.
• Fabric, weight and structure itemised. Knit or woven, and at what weight.
• Grading stated. Which sizes, and whether the two parts are graded together.
• Trims listed. Item by item, on the tested article.
• Minimum basis, trade term and validity. Per style and colour, FOB and the port, plus how long the figure stands.

Published: 2026-10-13 · Xiamen Unitex Trade Co., Ltd. — OEM & ODM underwear sourcing partner

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — OEM/ODM underwear sourcing and supply-chain partner in Xiamen, China; in the trade since 2009, incorporated in 2013. Based in the Xiamen–Quanzhou–Jinjiang knitwear cluster, Fujian Province, south-east China.