Kizer’s Topsail Ki3735A4 pairs a Böhler M390 blade with a crystallized titanium inlay that changes color as the light moves, and Amazon has it at $111 against a $169.99 list price. That’s 35% off a folder that usually sells on looks alone.
It sits in Kizer’s premium tier, where powder steels and titanium frames replace the budget builds.
The inlay starts as plain titanium before an electrochemical treatment grows crystalline structures across its surface, so the pattern on one knife never repeats on the next, or the one after it. Kizer calls the colorway Silver and Green. In green it reads almost like stone, then a tilt toward the light pulls blue, purple and gold out of the same piece.
Four Topsail versions share the shape, split by steel and inlay, and the green crystallized build is the discounted one.
Kizer Topsail Ki3735A4, Silver and Green
Böhler M390 drop point, 3.10 inches · Titanium frame with crystallized titanium inlay · Frame lock, 3.43 ounces
Price: $111 (save $58.99, 35% off the $169.99 list price)
Where to buy: Buy on Amazon
No two inlays match, and the color shifts every time the knife moves.
Kizer built the handle around flowing lines and smooth transitions, so nothing on the frame catches a pocket edge or a palm. It looks dressy and wears plain, and the sandblasted, stonewashed finish helps there too, because its texture swallows the scratches and scuffs that daily carry prints on polished titanium.
Jonathan Styles designed the Topsail, and the grip stays calmer than the inlay suggests. It fills the palm, and Kizer says the contoured handle cuts fatigue in long sessions.
M390 does the cutting
The blade is a 3.10-inch drop point in Böhler M390, a powder stainless that holds an edge through the kind of daily cutting that dulls lesser steels by the weekend. It’ll outlast the cardboard. Kizer runs it at 59 to 60 HRC with a flat grind and a blast finish, and the spine measures 0.12 inches thick. The edge runs clean from choil to point, with no recurve to fight a sharpening stone.
The drop point keeps its belly near the tip, so draw cuts and food-prep style slicing both stay on the menu, and geometry does the quiet work. A flat grind on 0.12-inch stock splits the difference between slicer and workhorse, thin enough to glide and thick enough to twist a little.
Wear resistance is the trait that built M390’s reputation in production folders, and it’s why the steel shows up on knives costing twice this sale price. Kizer says the steel keeps its edge under hard use, and the 59 to 60 HRC hardness is the number behind that claim. Hardness at that level also means the edge resists rolling when it meets staples, grit and pocket hazards that fold softer edges.
Two openers, one lock
You get a front flipper and a thumb hole, so the blade opens the way your hand already wants to work. Pick your opener and go. The frame lock is cut from the titanium handle itself, which keeps the parts count low, the lockup free of flex, and the whole mechanism easy to rinse clean.
The front flipper tab sits at the blade’s tang, ahead of the pivot, so a fingertip roll starts the blade moving before the hole ever comes into play. It’s the opener your hand finds without looking, and the thumb hole takes over for slow, deliberate openings, for one-handed closes against a thigh, and for anyone wearing gloves.
The thumb hole is the triangular cutout in the blade, the one visual trick the design repeats in every finish. It also drops a little weight from the blade ahead of the pivot, and it gives a gloved thumb purchase.
Because the lock bar is part of the handle slab, there’s no separate liner to loosen, and the titanium clip rides the same side of the knife. The lock face and the inlay sit on opposite sides of the same slab, which is why the show side stays clean.
The carry trade
Closed, the Topsail runs 4.07 inches of handle and disappears against a pocket seam at 3.43 ounces, with a titanium clip holding it tip-up on the right side of the pocket. You pay for the crystal. Here’s the trade: the clip doesn’t reverse, so left-side carry is out, and the inlay that makes this knife costs more than plain titanium. The M390 blade and the frame lock are why the money isn’t only cosmetic.
At 7.15 inches open, the Topsail is a full-size EDC rather than a watch-pocket knife.
Kizer’s own store runs the same $111 sale against the same $169.99 list, so the Amazon price is the real market price right now, not a one-retailer fluke. The saving is $58.99 either way.
Specifications
Kizer’s sheet for the Ki3735A4 runs short, and every figure in the table below matches the maker’s own published page for the knife, line for line. Nothing here comes from a retailer listing, and nothing has been rounded, converted twice or carried over from a different variant of the knife in the Topsail line.
| Model | Ki3735A4 |
| Designer | Jonathan Styles |
| Overall Length | 7.15 in (181.6 mm) |
| Blade Length | 3.10 in (78.2 mm) |
| Blade Steel | Böhler M390 |
| Hardness | 59 to 60 HRC |
| Blade Thickness | 0.12 in (3.0 mm) |
| Blade Style | Drop point, flat grind, blast finish |
| Handle | Titanium and crystallized titanium |
| Handle Length | 4.07 in (103.4 mm) |
| Lock | Frame lock |
| Pocket Clip | Titanium, non-reversible |
| Weight | 3.43 oz (97.2 g) |
Kizer Topsail Ki3735A4, Silver and Green
Jonathan Styles design · Front flipper and thumb hole · Titanium pocket clip, non-reversible
Price: $111 (save $58.99, 35% off the $169.99 list price)
Where to buy: Buy on Amazon
At $111, the Topsail Ki3735A4 is the rare dress-leaning folder with M390 and titanium doing real work under the crystal. Buy it if you want one knife that handles weekday cutting and still looks right at dinner. Skip it if you need left-hand carry.
