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Roundbox

RT Surfboards » Surfboards » Collection » Twin fins » Roundbox

An ultra-fun twin-fin,
exceptional in versatility!

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It can do anything…

A twin-fin conceived, designed and optimized to offer maximum versatility, suitable for surfers with different styles and effective in all types of waves.

Easy and forgiving enough to be functional with small waves, but also able to draw more aggressive lines, in more powerful waves.

Essential lines, cut for efficiency

The rocker, the outline and the thickness distribution are studied to favor an ideal and instinctive feet positioning, accessible to surfers of all levels.

The proportions, with a fairly generous width, make it easy to generate speed, even in soft waves; the relatively narrow round tail ensures ideal control, even at high speeds.

The single-concave bottom, combined with a fairly straight rocker, guarantees speed and precision to allow the surfer to draw the lines of their choice.

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Shaper’s breakdown

“ Those who know our range will notice an obvious affiliation with the Rover… It was indeed the enthusiastic feedback from some surfers using the ”classic” Rover in twin-fin mode (in small waves) that made me realize that, by optimizing certain details, there was really interesting potential.

Of course, I reviewed the placement of the fins; I also moved the wide point forward and took care of the volume distribution, to allow an efficient and natural drive using a twin fin set-up.
Finally, I tweaked the nose rocker, to ensure it stays out of the water without the need to force the back foot.

The result is a very accessible twin, fun to surf and, above all, extremely versatile, at ease in small, weak waves as well as in more solid conditions. ”

Size chart

For such a versatile shape, the measurements chosen will determine the final character of the board: short and wide versions will be excellent for small waves; longer and narrower versions will have ideal efficiency in more solid conditions.

Available standard in twin-fin and on request in 2 + 1 for twin + trailer use.

Keep in mind that the measurements presented here are guidelines for you to understand the proportions of the model.
These sizes are proven and popular among surfers, but it is possible (and we recommend) to adapt them to your body frame, level and experience, to meet your specific needs.

Length
Width
Thickness
Volume
5’5’’
19.65’’
2.25’’
25,9L
5’6’’
19.75’’
2.30’’
27,4L
5’7’’
19.88’’
2.35’’
28,6L
5’8’’
20.00’’
2.40’’
29,6L
5’9’’
20.13’’
2.45’’
30,7L
5’10’’
20.25’’
2.50’’
31,9L
5’11’’
20.35’’
2.55’’
33,0L
6’0’’
20.50’’
2.60’’
34,3L
6’1’’
20.65’’
2.65’’
35,4L
6’2’’
20.75’’
2.70’’
37,0L
6’3’’
21.00’’
2.75’’
38,6L
6’4’’
21.25’’
2.80’’
40,5L
rt surfboard the roundbox tech board

More tech

The outline draws a fluid and balanced line with the wide point slightly advanced.

The bottom has a single concave through the entire length, with a slight double concave between the fins.

The rocker line develops in three different sections: fairly straight in the middle; a more pronounced nose lift; reasonably accelerated in the rear part.

The volume is specifically distributed to help finding an ideal foot placement.

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Choose the construction
according to your requirements

How a board is made is as important as how it is shaped: the choice of materials used for its construction and the way of assembling them affects its weight, strength and efficiency…

To meet your requirements and optimize your sessions, our boards are available in five different constructions, each with its own technical specificity and effective in its own way.

(To find out more about materials, you can consult the INNOVATION & TECHNOLOGY page)

Classic PU

CLASSIC PU/POLYESTER

Classic PU construction
mastered in every detail
ideal for lightweight
surfers

– Versatile
– Handy
– Sincere

– PU blank
– Polyester resin
– E-glass bottom
– E-glass top
– Stringer reinforcement

€ 720.00 TTC

Premium PU

PREMIUM PU/POLYESTER

The excellence in
PU construction,
flawlessly efficient
in all conditions

– Efficient
– Functional
– Stronger

– PU blank
– Polyester resin
– E-glass bottom
– S-glass top
– Stringer reinforcement
– Tail reinforcement

€ 750.00 TTC

Polyola

POLYOLA/POLYESTER

Foam made from
recycled PU scraps
and recyclable ; efficient
and responsible

– Recycled
– Recyclable
– Strong

– Polyola blank
– Polyester resin
– E-glass bottom
– S-glass top
– Stringer reinforcement
– Tail reinforcement

€ 780.00 TTC

premium eps expoxy

PREMIUM EPS/EPOXY

Light, strong and with
more buoyancy, ideal
for small and medium conditions

– Light
– Dynamic
– Strong

– Hi-density EPS blank
– Epoxy resin
– E-glass bottom
– S-glass top
– Stringer reinforcement
– Tail reinforcement

€ 820.00 TTC

CARBON EPS EPOXY

CARBON EPS/EPOXY

Performance booster,
ideal for committed
surfing, in small and
medium conditions

– Light
– Super responsive
– Extra strong

– Hi-density EPS blank
– Epoxy resin
– E-glass bottom
– Stringer reinforcement
– Carbon top

€ 890.00 TTC

Roundbox from € 720.00TTC Order your board
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Colors !

Want color ? You have carte blanche!

Many different styles are available to satisfy virtually every request

Looking for inspiration? Explore our archive with 100+ colored boards…

Explore

Test center

Test, evaluate and choose the boards that best suit your needs.

Try and compare different shapes, to feel and understand how they work (or not) for you.

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