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SURFBOARDS > betweeners

Roberts Surfboards INVADER

ARMY KNIFE

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DESCRIPTION

Designed with components from some of our most versatile models, the Army Knife carves its own path with speed and precision. We started with the flatter rockers and straighter rail lines of the 3DF for quick down the line speed. Its nose comes from the White Diamond giving the Army Knife that same comfortable yet ready for performance feel that makes the WD so famous. With hips from the Modern 80s, not only do they look rad, they act as pivot points on the rails and aid in the reduction of the tail area. The Army Knife’s pulled in tail is complete with the tail block from the nimble Black Diamond for extra sensitivity and easy turning. Most of us need more than just a sharp blade. The Army Knife is the everyday wave multi-tool. 

FEATURES

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ROCKER

 Moderate to low rocker helps to quickly generate and maintain speed down the line and through flat sections
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RAILS

 Medium rails with a slightly lower apex for holding power
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BOTTOM

 Deep single through middle to double in tail for speed and control
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FINS

 Standard with five fin boxes and can be ridden as a tri or quad
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WAVE TYPE

 Knee to a few feet overhead

SIZE GUIDE

Standard Sizes   with   Suggested Weights
ARMY KNIFE
Ltr
Adv
Int
Nov
5’2  x 18 3/8 x 2 1/8
22.68
140
120
100
5’4 x 18 5/8 x 2 3/16
24.72
150
​130
110
​​5’5 x 18 3/4 x 2 1/4
25.66
​155
​135
​115
​​5’6 x 18 7/8 x 2 5/16
26.95
​165
​140
120
​5’7 x 19 1/8 x 2 3/8
​28.45
175
150
125
5’8 x 19 1/4 x 2 7/16
30.09
​185
155
​130
5’9 x 19 3/8 x 2 7/16
30.53
190
160
135
5’10 x 19 1/2 x 2 1/2
31.98
​195
165
140
​5’11 x 19 5/8 x 2 1/2
32.71
​200
170
145
​​​6’0 x 19 3/4 x 2 9/16
34.22
​210
180
150
6’1 x 19 7/8 x 2 5/8
35.75
220
185
155
​6’2 x 20 1/8 x 2 11/16
37.58
230
195
165
​6’4 x 20 3/8 x 2 13/16
40.91
250
215
180
6’6 x 20 5/8 x 2 7/8
43.57
265
230
190

HOW TO SIZE THIS BOARD

 Sized compared to pro model shortboards go 5-6 inches shorter, 1" wider and in the same thickness. 1-4" shorter than your height for high performance approach, matching volume to skill level, needs, or preferences. Up in volume and at your height or beyond for additional stability and wave catching ease. ​Custom dims are always available to match your needs or preferences. Please feel free to use our BOARD SIZING QUESTIONNAIRE to receive more info about our boards and sizing.

SIMILAR MODELS

3DF
BLACK DIAMOND
​
WHITE DIAMOND

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Roberts Surfboards 
1362 Tower Sq. # 1 
Ventura, CA 93003
Factory Phone: 805.658.6855
Send us a message HERE
Factory Showroom  

Anacapa Surf N Sport

1005 Harbor Blvd.
Oxnard, CA 93035
Phone: 805.382.1602

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  • SURFBOARDS
    • ALL SURFBOARDS
    • DIAMONDS >
      • WHITE DIAMOND
      • WHITE DIAMOND 2
      • WD3
      • DIAMOND FISH
      • DISCO DIAMOND
      • HOPE DIAMOND
      • 3DF
    • GROVELERS >
      • DREAM MACHINE
      • FLOATY
      • MUSH MACHINE
      • MUTANT
      • POOL TOY
    • ALL-AROUND ALTS >
      • THE DREAMCATCHER
      • THE DREAMCATCHER PLUS
      • DREAM MAKER
      • DREAM MAKER PLUS
      • JACKAL
      • THE ANYTHING
      • BRO FISH
      • DISCO HIPPY
      • METAMORPH
      • METATWIN
    • BETWEENERS >
      • ARMY KNIFE
      • BIODIESEL
      • CG
      • DIRTY BIRD
      • EL TORMENTOR
      • FISH PACO
      • FLYING HIPPIE
      • THE LIP
      • MEAT CLEAVER
      • MODERN 80'S
      • MODERN GEM
      • STAR CHIP
      • THE GOODS
      • THE VINDICATOR
      • VLAD
    • BLACK SERIES >
      • BLACK COBRA
      • BLACK DIAMOND
      • BLACK DUMP TRUCK
      • THE BLACK PUNT
      • BLACK THUMB
    • HIGH PERFORMANCE SHORTBOARDS >
      • GSD
      • MM-16
      • MP3
      • REDNECK
      • ROBS BIG BOY TRI
      • T-33
      • THE ILL
      • THE RAP
      • TURBO DIESEL
      • GROM SHORTBOARDS >
        • THE BEAVER
        • CRUZEE
    • STEP UPS AND BIG WAVE GUNS >
      • G STEP UP
      • OB PIN
      • PIN MASTER
      • TURBO CHARGER
      • WOOLLY MAMMOTH
    • MODERN CLASSICS >
      • HPLB
      • MODERN MID
      • INVADER
      • TWINVADER
      • THE FUN 1
      • CLASSIC LB
      • CLASSIC MID PIN
      • CLASSIC SINGLE + 2
      • CLASSIC FISH
  • Q&A
    • ABOUT ROBERTS
    • VOLUME FINDER
    • BOARD QUESTIONNAIRE
    • LOGO / ART OPTIONS
    • WHAT IS TWONZER?
    • DEALERS
  • TECHNOLOGY
    • PU/PE
    • RET
    • RFT
    • RFT-2
    • RFT-TDD
    • ESWT: EPOXY SOFT WRAP TECH
    • RET-KB
    • ALTERNATES
  • SHOP
    • CUSTOM SURFBOARDS
    • STOCK SURFBOARDS
    • FINS
    • APPAREL
    • GIFT CARDS