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Wide Flat Paint Brushes & LANGUO Field Watercolour Review: The UK Plein Air Painter's Complete Kit

Jun 18, 2026

7 Size Artist Wide Flat Paint Brushes Set

Plein air watercolour painting — painting outdoors, on location — demands tools that are both high-performing and genuinely portable. The 7 Size Artist Wide Flat Paint Brushes Set and the LANGUO Watercolour Paint Set — Field Pocket, 16 Colors are designed for exactly this kind of use: professional-quality brushes in a comprehensive size range, paired with a compact field palette that fits in a jacket pocket. Together they give UK plein air painters everything needed for a complete outdoor painting session.

7 Size Artist Wide Flat Paint Brushes Set

7 Size Wide Flat Brushes: Why Flat Brushes Excel for Watercolour

Flat brushes are the workhorses of watercolour painting — versatile tools that produce a wider range of marks than round brushes alone. The flat edge produces crisp, straight strokes ideal for architectural subjects and geometric shapes; the corner produces fine lines and details; the broad face produces wide washes and bold colour areas. The 7-size set covers the full range from the finest detail brush to the broadest wash brush, giving UK watercolour painters a complete flat brush toolkit.

Seven Sizes: A Brush for Every Mark

  • Smallest sizes (1–2) — fine detail, architectural elements, lettering, and precise edges
  • Mid sizes (4–6) — general painting, medium washes, foliage, and textured areas
  • Largest sizes (8–10+) — broad sky washes, large colour areas, and wet-into-wet backgrounds
LANGUO Watercolor Paint Set Field Pocket 16 Colors

LANGUO Field Pocket Watercolour: 16 Colours in Your Pocket

The LANGUO Field Pocket Watercolour Set is designed around a single principle: maximum colour range in minimum space. Sixteen colours in a compact, pocket-sized format that includes a built-in mixing area and a brush — everything needed for a complete painting session in a package that fits in a jacket pocket.

16 Colours: A Complete Field Palette

Sixteen colours is the sweet spot for field painting — enough to mix virtually any colour you'll encounter in the UK landscape, without the bulk and weight of a larger palette. The LANGUO selection covers warm and cool primaries, key earth tones, and essential neutrals — a palette that experienced watercolour painters will recognise as a thoughtfully curated field selection.

The Complete Plein Air Kit

Paired together, the 7-size flat brush set and the LANGUO field palette give UK plein air painters a complete outdoor studio. The flat brushes handle every mark-making need from broad sky washes to fine architectural detail; the field palette provides a comprehensive colour range in a format that travels effortlessly. Whether you're painting in a London park, on a Cornish beach, or in the Scottish Highlands, this combination has everything you need. Browse our full watercolour range at TTPEN UK.

Take your studio outside. Shop the 7-Size Flat Brush Set and LANGUO Field Pocket Watercolour today.

Free UK delivery on qualifying orders at www.ttpen.co.uk.