Triumph Triaction Extreme Lite Colour 3780 Grey 163839 Sports Bra

TRIUMPH Triaction Extreme Lite Sports Bra Colour 3780 Grey 163839

Name: TRIUMPH Triaction Extreme Lite Sports Bra Colour 3780 Grey 163839
Brand: Triumph
SKU: TRI-TRIACTIONEXTREMELITECOLORGRIS
Price: 31.4 GBP
Availability: InStock

Triumph

£31.40

Tax included

Sports Bra with extreme bounce control (77% tested) and 3D laminated cups for maximum support and breathability.

Underbust measurement

Bust measurement

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Only your size is saved, never your measurements, and only on this device.

Tap a measurement on the outline to see how to take it. Measure against your skin or over a thin bra, without pulling the tape tight.

Outline showing the four measuring points

Silent video: it only shows where to place the tape.

How is the size worked out?

Measure around your ribcage, just under the bust. That figure plus 15 is your European band size: 75 cm gives a 90 band, which is a UK 34.
Measure around the fullest part of your bust.
Subtract the first measurement from the second. That difference is your cup: 15-16 cm is B, 17-18 cm is C, 19-20 cm is D…
Put the two together: 75 cm underbust and 92 cm bust is a 17 cm difference, which makes a 90C in European sizing — a UK 34C.

Chart published by this product's brand. If it differs from your result, go with the brand.

Official Triumph size chart. Its band size is labelled in Spanish/French sizing (ES/FR).

Band
Triumph size	EU	UK/US	Underbust (cm)
80	65	30	63-67
85	70	32	68-72
90	75	34	73-77
95	80	36	78-82
100	85	38	83-87
105	90	40	88-92
110	95	42	93-97
115	100	44	98-102
120	105	46	103-107
125	110	48	108-112

Bust (cm) by cup
Size	B	C	D	E (UK DD)	F (UK E)	G (UK F)	H (UK FF)	I (UK G)	J (UK GG)
80	79-81	81-83	83-85	85-87	87-89	89-91	91-93	93-95	95-97
85	84-86	86-88	88-90	90-92	92-94	94-96	96-98	98-100	100-102
90	89-91	91-93	93-95	95-97	97-99	99-101	101-103	103-105	105-107
95	94-96	96-98	98-100	100-102	102-104	104-106	106-108	108-110	110-112
100	99-101	101-103	103-105	105-107	107-109	109-111	111-113	113-115	115-117
105	104-106	106-108	108-110	110-112	112-114	114-116	116-118	118-120	120-122
110	109-111	111-113	113-115	115-117	117-119	119-121	121-123	123-125	125-127
115	114-116	116-118	118-120	120-122	122-124	124-126	126-128	128-130	130-132
120	119-121	121-123	123-125	125-127	127-129	129-131	131-133	133-135	135-137
125	124-126	126-128	128-130	130-132	132-134	134-136	136-138	138-140	140-142

Every brand measures cups its own way: compare your measurements with this chart.

Briefs
Size	Letter	Hips (cm)
36	XS	84-88
38	S	89-92
40	S	93-97
42	M	98-102
44	M	103-107
46	L	108-112
48	L	113-117
50	XL	118-122
52	XL	123-127
54	XXL	128-132
56	XXL	133-138
58	XXL	139-143

Source: official Triumph size guide, consulted 14/10/2026.

The Triumph Triaction Extreme Lite Sports Bra in grey offers extreme bounce control, tested by the University of Portsmouth with a 77% reduction in bounce. Its innovative 3D laminated cups heat-seal three different materials to minimise breast movement during exercise, adapting to every silhouette.

The four-way stretch technical fabric, combined with lightweight mesh and a thermoregulating lining, provides superior breathability. Lamination with strategically placed adhesion points maintains the necessary strength and flexibility for a perfect fit.

This wire-free bra features pre-formed cups and a wide, velvet-touch underband for exceptional support and comfort. The adjustable 3D straps, with safety clip and cross-back option, guarantee optimal comfort. The wide, padded hook-and-eye closure adjusts in three positions.

With 79% polyamide and 21% elastane, including LYCRA® for unparalleled freedom of movement. The breathable fabric regulates moisture, is antibacterial and suitable for sensitive skin. Unlined, the shaping cups firmly surround the bust. Complete your sports outfit with the matching Triumph briefs.