Armstrong, 2026

Midlength Mk II X-Form

1727mm long · 5'8"

499mm wide

108mm thick

65litres

Open in Studio See it on armstrongfoils.com

Sizes & Numbers

Listed by the brand, read off a photo, or worked out: where every number comes from

In one line

Shorter and wider than the 2024. The 65 L is 25 mm shorter and 16 mm wider than the Mk I (Midlength FG) 65 L.

65 L against the Mk I (Midlength FG) 65 L, listed length and width.

As listed by Armstrong

Armstrong Midlength Mk II X-Form: every size as listed by Armstrong
size	length	width	thickness	weight
38 L	4'8 · 1422 mm	460 mm	83 mm	3.7 kg
45 L	5'0 · 1524 mm	473 mm	89 mm	3.8 kg
55 L	5'4 · 1626 mm	486 mm	102 mm	4 kg
65 L	5'8 · 1727 mm	499 mm	108 mm	4.2 kg
75 L	6'0 · 1829 mm	518 mm	111 mm	4.5 kg
85 L	6'4 · 1930 mm	543 mm	114 mm	4.8 kg
100 L	6'8 · 2032 mm	565 mm	124 mm	5.2 kg
115 L	6'11 · 2108 mm	578 mm	133 mm	5.7 kg
130 L	7'2 · 2184 mm	591 mm	143 mm	5.9 kg

Every size side by side, tails on one line, one scale

Next to your board?

Lay the Armstrong Midlength 65 L over up to four others, at one scale.

Compare with…

Generations

Before it · Mk I (Midlength FG), 2024

The Mk II X-Form 65 L is 25 mm shorter and 16 mm wider than the Mk I (Midlength FG) 65 L; its wide point moved 39 mm toward the tail. Open the Mk I (Midlength FG)

listed length and width · wide point derived

Mk II X-Form 65 L Mk I (Midlength FG) 65 L

The Armstrong Midlength over time

Shape & Rocker

From above, then from the side, true scale · the chosen size solid, the others dashed

Read off the 38 L outline · derived

52 %wide point, 732 mm from the tail

3.09length over width

391mm wide 12″ from the tail

5,362cm² of planform

Read off the 45 L outline · derived

52 %wide point, 784 mm from the tail

3.22length over width

395mm wide 12″ from the tail

5,904cm² of planform

Read off the 55 L outline · derived

52 %wide point, 836 mm from the tail

3.35length over width

399mm wide 12″ from the tail

6,467cm² of planform

Read off the 65 L outline · derived

52 %wide point, 889 mm from the tail

3.46length over width

403mm wide 12″ from the tail

7,050cm² of planform

Read off the 75 L outline · derived

52 %wide point, 941 mm from the tail

3.53length over width

412mm wide 12″ from the tail

7,750cm² of planform

Read off the 85 L outline · derived

52 %wide point, 993 mm from the tail

3.56length over width

426mm wide 12″ from the tail

8,582cm² of planform

Read off the 100 L outline · derived

52 %wide point, 1046 mm from the tail

3.60length over width

438mm wide 12″ from the tail

9,404cm² of planform

Read off the 115 L outline · derived

52 %wide point, 1085 mm from the tail

3.65length over width

443mm wide 12″ from the tail

9,975cm² of planform

Read off the 130 L outline · derived

52 %wide point, 1124 mm from the tail

3.70length over width

449mm wide 12″ from the tail

10,564cm² of planform

Rocker of the 38 L · scaled from the 65 L measured

33 mmtail rocker, at the tip

5 mm12″ from the tail

20 mm12″ from the nose

102 mmnose rocker, at the tip

500 mmflat to within 3 mm, from 27 % to 62 % of the length

44 %of the length to the lowest point, from the tail

90 mmat its thickest, 65 % from the tail

24 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 45 L · scaled from the 65 L measured

35 mmtail rocker, at the tip

5 mm12″ from the tail

24 mm12″ from the nose

110 mmnose rocker, at the tip

516 mmflat to within 3 mm, from 28 % to 62 % of the length

44 %of the length to the lowest point, from the tail

97 mmat its thickest, 65 % from the tail

26 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 55 L · scaled from the 65 L measured

38 mmtail rocker, at the tip

6 mm12″ from the tail

28 mm12″ from the nose

118 mmnose rocker, at the tip

532 mmflat to within 3 mm, from 29 % to 61 % of the length

44 %of the length to the lowest point, from the tail

110 mmat its thickest, 65 % from the tail

28 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 65 L · measured

40 mmtail rocker, at the tip

8 mm12″ from the tail

33 mm12″ from the nose

126 mmnose rocker, at the tip

547 mmflat to within 3 mm, from 29 % to 61 % of the length

44 %of the length to the lowest point, from the tail

117 mmat its thickest, 65 % from the tail · on the photo; Armstrong lists 108 mm

29 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 75 L · scaled from the 65 L measured

43 mmtail rocker, at the tip

9 mm12″ from the tail

37 mm12″ from the nose

134 mmnose rocker, at the tip

563 mmflat to within 3 mm, from 30 % to 61 % of the length

44 %of the length to the lowest point, from the tail

121 mmat its thickest, 65 % from the tail

31 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 85 L · scaled from the 65 L measured

45 mmtail rocker, at the tip

10 mm12″ from the tail

42 mm12″ from the nose

142 mmnose rocker, at the tip

578 mmflat to within 3 mm, from 31 % to 60 % of the length

44 %of the length to the lowest point, from the tail

124 mmat its thickest, 65 % from the tail

33 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 100 L · scaled from the 65 L measured

48 mmtail rocker, at the tip

12 mm12″ from the tail

47 mm12″ from the nose

150 mmnose rocker, at the tip

593 mmflat to within 3 mm, from 31 % to 60 % of the length

44 %of the length to the lowest point, from the tail

134 mmat its thickest, 65 % from the tail

35 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 115 L · scaled from the 65 L measured

49 mmtail rocker, at the tip

13 mm12″ from the tail

51 mm12″ from the nose

156 mmnose rocker, at the tip

605 mmflat to within 3 mm, from 31 % to 60 % of the length

44 %of the length to the lowest point, from the tail

145 mmat its thickest, 65 % from the tail

36 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 130 L · scaled from the 65 L measured

51 mmtail rocker, at the tip

14 mm12″ from the tail

54 mm12″ from the nose

162 mmnose rocker, at the tip

616 mmflat to within 3 mm, from 32 % to 60 % of the length

44 %of the length to the lowest point, from the tail

155 mmat its thickest, 65 % from the tail

37 mmlonger along the bottom curve than flat

Lay this rocker over other boards

True proportions · dots at 10 mm and 12″ in from each tip · bracket: flat to within 3 mm · Measured on Armstrong's photo of the 65 L. Tail end set by Armstrong's photo convention, not checked by a person.